JP2003013163A - Sliding member made from powder aluminum alloy, and combination of cylinder and piston ring - Google Patents

Sliding member made from powder aluminum alloy, and combination of cylinder and piston ring

Info

Publication number
JP2003013163A
JP2003013163A JP2001202216A JP2001202216A JP2003013163A JP 2003013163 A JP2003013163 A JP 2003013163A JP 2001202216 A JP2001202216 A JP 2001202216A JP 2001202216 A JP2001202216 A JP 2001202216A JP 2003013163 A JP2003013163 A JP 2003013163A
Authority
JP
Japan
Prior art keywords
aluminum alloy
sliding member
hard particles
member made
particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001202216A
Other languages
Japanese (ja)
Inventor
Shinji Kato
▲慎▼治 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP2001202216A priority Critical patent/JP2003013163A/en
Publication of JP2003013163A publication Critical patent/JP2003013163A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/341Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one carbide layer
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/324Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal matrix material layer comprising a mixture of at least two metals or metal phases or a metal-matrix material with hard embedded particles, e.g. WC-Me
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/343Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one DLC or an amorphous carbon based layer, the layer being doped or not

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Powder Metallurgy (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a sliding member made from a powder aluminum alloy, superior in abrasion resistance, corrosion resistance, extrudability, and machinability, while little abrading an opposite material. SOLUTION: The sliding member made from the powder aluminum alloy comprises a matrix formed by the powder aluminum alloy, which includes silicon 12-30%, manganese 3-6%, magnesium 1-6%, and the balance substantially aluminum with unavoidable impurities, and which has 30 or more of multiplied value of the mass percentage of silicon by that of manganese; and hard particles dispersed in the matrix, which are one or two of ferrous hard particles and ceramic particles having a lower hardness than that of alumina. A superior wear resistance can be obtained also by improving the abrasion resistance of the aluminum alloy and dispersing hard particles of a comparatively low hardness. The aluminum alloy possesses improved corrosion resistance because of excluding Fe and Cu, and possesses improved elongation and extrudability because of little total added quantity of Si, Fe, Cu, and the like.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、粉末アルミニウム
合金製摺動部材及びシリンダとピストンの組み合わせに
関する。特にシリンダーライナーに用いることができる
粉末アルミニウム合金製摺動部材及び粉末アルミニウム
合金製摺動部材をシリンダの内周摺動面に用いたシリン
ダとピストンに関する。
TECHNICAL FIELD The present invention relates to a sliding member made of powder aluminum alloy and a combination of a cylinder and a piston. In particular, the present invention relates to a powder aluminum alloy sliding member that can be used for a cylinder liner and a cylinder and a piston that use the powder aluminum alloy sliding member on the inner peripheral sliding surface of the cylinder.

【0002】[0002]

【従来の技術】自動車のエンジンのシリンダライナ材と
して、従来製造コストを低く押さえるために安価な鋳鉄
等が用いられてきた。
2. Description of the Related Art Conventionally, inexpensive cast iron or the like has been used as a cylinder liner material for automobile engines in order to keep manufacturing costs low.

【0003】しかし近年では燃費の向上から各部品の軽
量化が要請され、耐熱性、耐摩耗性が要求されるシリン
ダライナについても同様に軽量化が要請されている。そ
こで安価なねずみ鋳鉄に代わってシリンダライナに用い
ることができる軽いアルミニウム合金を用いた摺動部材
が開発されてきた。
However, in recent years, there has been a demand for reducing the weight of each component in order to improve fuel economy, and similarly for a cylinder liner which is required to have heat resistance and wear resistance, a reduction in weight is also required. Therefore, a sliding member using a light aluminum alloy that can be used for a cylinder liner has been developed in place of an inexpensive gray cast iron.

【0004】[0004]

【発明が解決しようとする課題】しかしながらアルミニ
ウム合金製摺動部材をシリンダライナに用いた場合のよ
うに高温、高面圧、腐食雰囲気、油滑不足状態で使用す
ると、アルミニウム合金のみ構成されたアルミニウム製
摺動部材では摺動部材の耐摩耗性が不足することにな
る。そのためにアルミニウム合金の耐摩耗性の不足を補
うためにアルミニウム合金に硬さの高い硬質成分を含有
させてアルミニウム合金製摺動部材の耐摩耗性を確保す
ることが従来から行われた。
However, when a sliding member made of an aluminum alloy is used in a high temperature, a high surface pressure, a corrosive atmosphere, and a lack of lubrication as in the case where the sliding member made of an aluminum alloy is used in the cylinder liner, the aluminum member made of only the aluminum alloy is used. With the sliding member, the abrasion resistance of the sliding member is insufficient. Therefore, in order to make up for the lack of wear resistance of the aluminum alloy, it has been conventionally performed to contain a hard component having high hardness in the aluminum alloy to ensure the wear resistance of the sliding member made of the aluminum alloy.

【0005】例えば特開平2−122043号公報に
は、初晶の大きさが10μm以下のケイ素(Si)を含
むアルミニウム合金からなるマトリックスとこのマトリ
ックス中に分散されかつアルミニウム合金製摺動部材の
質量を100%として3〜5%のアルミナ粒子及び0.
5〜3%の黒鉛粒子とを有し、アルミナ粒子は最大粒径
が30μm以下で平均粒径が10μm以下であり、黒鉛
粒子は最大粒径が10μm以下であるアルミニウム合金
製摺動部材が開示されている。更にこのアルミニウム合
金製摺動部材に用いられるアルミニウム合金として、ア
ルミニウム合金の質量を100%として、16〜18%
のSiと4〜6%の鉄(Fe)と2〜4%の銅(Cu)
と0.5〜2%のマグネシウム(Mg)と0.2〜0.
5%のマンガン(Mn)と残部をアルミニウム(Al)
及び不可避的な不純物とからなるアルミニウム合金が開
示されている。
For example, in Japanese Patent Application Laid-Open No. 2-120243, a matrix made of an aluminum alloy containing silicon (Si) having a primary crystal size of 10 μm or less, and a mass of a sliding member made of an aluminum alloy dispersed in this matrix. Is defined as 100% and 3 to 5% of alumina particles and 0.
Disclosed is an aluminum alloy sliding member having 5 to 3% of graphite particles, alumina particles having a maximum particle size of 30 μm or less and an average particle size of 10 μm or less, and graphite particles having a maximum particle size of 10 μm or less. Has been done. Further, as an aluminum alloy used for this aluminum alloy sliding member, the mass of the aluminum alloy is 100%, and 16 to 18%.
Si and 4-6% iron (Fe) and 2-4% copper (Cu)
And 0.5-2% magnesium (Mg) and 0.2-0.
5% manganese (Mn) and balance aluminum (Al)
And an aluminum alloy consisting of unavoidable impurities.

【0006】また特開平2−101140号公報にはア
ルミニウム合金マトリックスとこのアルミニウム合金マ
トリックスに分散された硬質粒子とを有し、このアルミ
ニウム合金マトリックスは、アルミニウム合金マトリッ
クスの質量を100%として、14.5%のSiと4.
5%のFeと2.5%のCuと0.5%のMgと残部を
実質的にAl及び不可避的不純物とからなり、硬質粒子
はアルミナ粒子、ムライト粒子、炭化ケイ素等のセラミ
ックス粒子を用いたアルミニウム合金摺動部材が開示さ
れている。
Japanese Unexamined Patent Publication No. 2-101140 has an aluminum alloy matrix and hard particles dispersed in the aluminum alloy matrix, and the aluminum alloy matrix has a mass of the aluminum alloy matrix of 100%, and 14. 5% Si and 4.
5% Fe, 2.5% Cu, 0.5% Mg and the balance substantially Al and unavoidable impurities, and hard particles are made of alumina particles, mullite particles, silicon carbide or other ceramic particles. A conventional aluminum alloy sliding member is disclosed.

【0007】しかしここで開示されたアルミニウム合金
製摺動部材のように、硬さの高い硬質成分でアルミニウ
ム合金製摺動部材の耐摩耗性の不足を補うと、この硬質
成分の成分の存在によって、今度は相手材の摩耗を増大
させてしまうという問題が生じていた。そこでこの相手
材の摩耗を増大させてしまうという問題にたいして、従
来は相手材を耐摩耗性の優れた材料に変更することによ
って対応してきた。また硬さの高い硬質成分を含んでい
るためにアルミニウム摺動部材に対して切断、ボーリン
グ等の機械加工を行った場合に加工性が悪いという問題
が生じた。
However, when the insufficient wear resistance of the aluminum alloy sliding member is compensated by a hard component having a high hardness like the aluminum alloy sliding member disclosed herein, the presence of this hard component causes This time, there was a problem that the wear of the mating material was increased. Therefore, the problem of increasing the wear of the mating material has been conventionally dealt with by changing the mating material to a material having excellent wear resistance. Further, since the aluminum sliding member contains a hard component having a high hardness, there is a problem that the workability is poor when the aluminum sliding member is subjected to machining such as cutting and boring.

【0008】またこれらのアルミニウム合金製摺動部材
は耐食性が悪く、エンジンのシリンダライナ材に用いる
場合のように腐食雰囲気下において摩耗が大きかった。
さらに伸び、押出性が悪く、また熱伝導性が低いという
問題もあった。
Further, these aluminum alloy sliding members have poor corrosion resistance, and have a large amount of wear in a corrosive atmosphere as in the case of being used as a cylinder liner material for an engine.
Further, there are problems that elongation and extrudability are poor, and that thermal conductivity is low.

【0009】またアルミニウム合金製摺動部材をシリン
ダライナに用いた場合には低温スカッフ性が悪いという
問題が従来から生じていた。即ち低温かつ枯渇潤滑下で
使用した場合に、アルミニウム合金中のアルミニウムが
塑性流動し易いことから、摺動面の表面の形状がオイル
の保持性能を有していないと、容易に凝着を起こしてス
カッフを発生させていた。
Further, when an aluminum alloy sliding member is used for a cylinder liner, there has been a problem that the low temperature scuffing property is poor. That is, when used at low temperature and under depletion lubrication, aluminum in the aluminum alloy easily plastically flows, so if the shape of the sliding surface does not have oil retention performance, adhesion will easily occur. Was causing scuffing.

【0010】そのために従来からアルミニウム合金製摺
動部材の摺動面の表面をECM処理(Electrochemical M
achining)即ち電解加工を行ってきた。しかしこの電解
加工は前処理として脱脂を十分に行う必要があり、又処
理むらが生じやすいという問題があった。更に処理液の
劣化を防いだり、処理液の蒸気によって周囲の加工機械
が錆びるのを防止する必要があり、そのために製造コス
トが増大するという問題があった。
Therefore, the surface of the sliding surface of the aluminum alloy sliding member has conventionally been subjected to ECM treatment (Electrochemical M
achining), that is, electrolytic processing. However, this electrolytic processing has a problem that it is necessary to sufficiently perform degreasing as a pretreatment, and uneven treatment is likely to occur. Further, it is necessary to prevent the deterioration of the processing liquid and to prevent the surrounding processing machines from rusting due to the vapor of the processing liquid, which causes a problem that the manufacturing cost increases.

【0011】一方ショットブラスト、ショットピーニン
グ等では必要なスカッフ防止性を得ることができなかっ
た。
On the other hand, shot blasting, shot peening, etc. cannot obtain the required anti-scuffing property.

【0012】またスカッフ性は、相対する摺動部材の組
み合わせにも依存するものである。摺動部材に用いられ
るアルミニウム合金は、上述したように凝着しやすいも
のである。そこで相手材の特性がこの凝着し易さを補う
ことが追求されてきた。
The scuffing property also depends on the combination of opposing sliding members. The aluminum alloy used for the sliding member easily adheres as described above. Therefore, it has been pursued that the characteristics of the mating material compensate for this easiness of adhesion.

【0013】本発明は上記問題を鑑みてなされたもので
あり、本発明の目的は、耐摩耗性、耐食性、押出性、機
械加工性に優れ、相手材の摩耗が小さい粉末アルミニウ
ム合金性摺動部材を提供することである。
The present invention has been made in view of the above problems, and an object of the present invention is a powder aluminum alloy slide having excellent wear resistance, corrosion resistance, extrudability, and machinability and having little wear of a mating material. It is to provide a member.

【0014】また本発明の目的は、更にスカッフ防止性
に優れた粉末アルミニウム合金製摺動部材を提供するこ
とである。
Another object of the present invention is to provide a sliding member made of a powdered aluminum alloy which is further excellent in scuff prevention.

【0015】更に本発明の目的は、スカッフ防止性に優
れたシリンダとピストンの組み合わせを提供することで
ある。
Another object of the present invention is to provide a combination of a cylinder and a piston which is excellent in scuff prevention.

【0016】[0016]

【課題を解決する手段】(第1の発明)本発明者は従来
のアルミニウム合金製摺動部材の問題点について以下の
ように考えた。まず相手材の摩耗が大きく、また機械加
工性が悪いのは、アルミニウム合金製摺動材の耐摩耗性
を確保するために硬さの高いアルミナ、炭化ケイ素等の
硬質セラミックス粒子を分散させているからだと考え
た。そこで硬質粒子としては比較的硬さの低い硬質粒子
を用いて、代わりにマトリックスとしてのアルミニウム
合金自体の耐摩耗性を向上させればよいと考えた。
Means for Solving the Problems (First Invention) The present inventor has considered the problems of conventional aluminum alloy sliding members as follows. First, the wear of the mating material is large and the machinability is poor. Hard ceramic particles such as alumina and silicon carbide with high hardness are dispersed to secure the wear resistance of the aluminum alloy sliding material. I thought it was the body. Therefore, it was considered that hard particles having a relatively low hardness should be used as the hard particles, and instead the wear resistance of the aluminum alloy itself as the matrix should be improved.

【0017】また従来のアルミニウム合金製摺動部材の
耐食性が悪いのは、マトリックスとしてのアルミニウム
合金にFe、Cuが含まれているからであり、また熱伝
導性が低く、伸び及び押出性が悪いのは、アルミニウム
合金に含まれるSi、Fe、Cu等の合計添加量が多い
からだと考えた。
Further, the conventional aluminum alloy sliding member has poor corrosion resistance because the aluminum alloy as a matrix contains Fe and Cu, and also has low thermal conductivity and poor elongation and extrudability. It was thought that this was because the total amount of Si, Fe, Cu, etc. contained in the aluminum alloy was large.

【0018】そこで本発明者は、鋭意研究の結果、粉末
アルミニウム合金によって形成されたマトリックスとこ
のマトリックス中に分散された硬質粒子とを含む粉末ア
ルミニウム合金製摺動部材において、粉末アルミニウム
合金は、粉末アルミニウム合金の質量を100%として
12〜30%のケイ素と1〜6%のマンガンと1〜6%
のマグネシウムと残部を実質的にアルミニウム及び不可
避的不純物とからなり、かつ前記ケイ素の質量百分率の
数値と前記マンガンの質量百分率の数値とを掛け合わせ
た数値が30以上となる組成であり、硬質粒子は、鉄系
硬質粒子及びアルミナよりも硬さが低いセラミックス粒
子の1種以上であることを特徴とする粉末アルミニウム
合金製摺動部材を発明した。
Therefore, as a result of earnest research, the present inventors have found that in a sliding member made of a powder aluminum alloy containing a matrix formed of the powder aluminum alloy and hard particles dispersed in the matrix, the powder aluminum alloy is Assuming that the mass of the aluminum alloy is 100%, 12 to 30% of silicon, 1 to 6% of manganese and 1 to 6%
Of magnesium and the balance consisting essentially of aluminum and unavoidable impurities, and a composition in which the numerical value obtained by multiplying the numerical value of the mass percentage of the silicon and the numerical value of the mass percentage of the manganese is 30 or more, and hard particles Have invented a sliding member made of a powdered aluminum alloy, which is one or more of iron-based hard particles and ceramic particles having a hardness lower than that of alumina.

【0019】即ち本発明は、マトリックスとしてのアル
ミニウム合金の組成を上記組成とすることによって、ア
ルミニウム合金の耐摩耗性を向上させて硬質成分の負担
を軽減して、鉄系硬質粒子及びアルミナよりも硬さが低
いセラミックス粒子のように比較的に硬さの低い硬質粒
子を含有させても優れた耐摩耗性を得ることができるよ
うにした。
That is, according to the present invention, by making the composition of the aluminum alloy as the matrix the above-mentioned composition, the wear resistance of the aluminum alloy is improved and the burden of the hard component is reduced, so that it is better than the iron-based hard particles and alumina. Even if hard particles having a relatively low hardness such as ceramic particles having a low hardness are contained, excellent wear resistance can be obtained.

【0020】また本発明の粉末アルミニウム合金製摺動
部材は、アルミニウム合金にFe、Cuを含有していな
いので耐食性を向上させることができる。またアルミニ
ウム合金に含まれるSi、Fe、Cu等の合計添加量が
少ないので、伸び及び押出性を向上させることができ
る。
Further, the powder aluminum alloy sliding member of the present invention can improve the corrosion resistance because the aluminum alloy does not contain Fe or Cu. Further, since the total amount of Si, Fe, Cu, etc. contained in the aluminum alloy is small, the elongation and the extrudability can be improved.

【0021】また本発明者は、スカッフ防止性を向上さ
せる観点から、本発明の粉末アルミニウム合金製摺動部
材の摺動面に対して、従来のEMC処理に代えて次の処
理を行うことが好ましいと考えた。
From the viewpoint of improving the scuff prevention property, the present inventor may perform the following treatment on the sliding surface of the powder aluminum alloy sliding member of the present invention instead of the conventional EMC treatment. I thought it was preferable.

【0022】即ち本発明者は、上述した本発明の粉末ア
ルミニウム合金製摺動部材において、ウォータブラスト
によって相手材と摺動する摺動面に多数の凹部が形成さ
れた粉末アルミニウム合金摺動部材を発明した。
That is, the inventor of the present invention, in the above-described powder aluminum alloy sliding member of the present invention, has a powder aluminum alloy sliding member in which a large number of recesses are formed on the sliding surface which slides against the mating material by water tablast. Invented

【0023】高圧水を音速を超える高速で粉末アルミニ
ウム合金製摺動部材の摺動面に当てることによって、粉
末アルミニウム合金製摺動部材の摺動面を破壊して摺動
面に多数の微小な凹部を均一に分布させることができ
る。摺動面に形成され均一に分布した微小な凹部は油溜
まりの役割を有し、スカッフを防止することができる。
By applying high-pressure water to the sliding surface of the sliding member made of the powder aluminum alloy at a high speed exceeding the speed of sound, the sliding surface of the sliding member made of the powder aluminum alloy is destroyed and a large number of fine particles are formed on the sliding surface. The recesses can be evenly distributed. The minute recesses formed on the sliding surface and uniformly distributed serve as an oil reservoir, and can prevent scuffing.

【0024】また本発明者は、本発明の粉末アルミニウ
ム合金製摺動部材において、Ni及びSnのいずれかを
コーティングした微粒子を用いたショットブラストによ
って相手材と摺動する摺動面に多数の凹部が形成される
と共にNi被膜及びSn被膜のいずれかが形成された粉
末アルミニウム合金製摺動部材を発明した。
In addition, the present inventor has found that, in the powder aluminum alloy sliding member of the present invention, a large number of recesses are formed on the sliding surface which slides on the mating material by shot blasting using fine particles coated with either Ni or Sn. The present invention invented a sliding member made of a powdered aluminum alloy in which the Ni coating and the Sn coating were formed together with the above.

【0025】単に微粒子を用いたショットブラストのみ
ではマトリックスである粉末アルミニウム合金の組成流
動層を伴うために十分なスカッフ防止性を得ることが困
難である。またアルミニウム合金と合金化しにくいNi
或いはSnを単にアルミニウム合金製摺動部材の摺動面
にコーティングしただけではスカッフ防止性が不足する
だけではなく、短時間にコーティングしたNi或いはS
nの被膜が摩滅してしまう。そこでNi或いはSnをコ
ーティングした微粒子を用いて摺動面にショットブラス
トを行って、微小な凹部を形成すると共にNi或いはS
nの被膜を形成することによってスカッフ防止性を向上
させることができる。
Only by shot blasting using fine particles, it is difficult to obtain sufficient anti-scuffing property because of the composition fluidized bed of the powdered aluminum alloy which is the matrix. Also, Ni that is difficult to alloy with aluminum alloys
Alternatively, if Sn is simply coated on the sliding surface of the aluminum alloy sliding member, not only the scuffing prevention property is insufficient, but also Ni or S coated in a short time is used.
The film of n will be worn away. Therefore, shot blasting is performed on the sliding surface using fine particles coated with Ni or Sn to form minute recesses, and at the same time Ni or S is used.
By forming the film of n, the scuffing prevention property can be improved.

【0026】(第2の発明)また本発明者は、シリンダ
とピストンリングの組み合わせにおいて、シリンダの内
周摺動面は、本発明の粉末アルミニウム合金製摺動部材
のいずれかによって構成され、シリンダの内周摺動面と
摺動するピストンリングの外周摺動面はDLC被膜、W
C/C被膜及び樹脂被膜のいずれかが形成されているこ
とを特徴とするシリンダとピストンリングの組み合わせ
を発明した。
(Second Invention) In addition, the present inventor has found that, in a combination of a cylinder and a piston ring, the inner peripheral sliding surface of the cylinder is formed of any of the powder aluminum alloy sliding members of the present invention. The outer peripheral sliding surface of the piston ring that slides with the inner peripheral sliding surface of the
The invention has invented a combination of a cylinder and a piston ring, which is characterized in that either a C / C coating or a resin coating is formed.

【0027】本発明の粉末アルミニウム合金製摺動部材
をシリンダの内周摺動面として用いた場合、その相手材
であるピストンリングの外周摺動面にDLC(diamond l
ikecarbon)被膜、WC/C(タングステンカーバイド層
とカーバイド層のナノミクロンオーダーの積層体)被膜
或いは樹脂被膜を形成すると、アルミニウム合金の凝着
を発生しにくくすることができる。従ってスカッフ防止
性に優れたシリンダとピストンリングの組み合わせを提
供することができる。
When the sliding member made of the powdered aluminum alloy of the present invention is used as the inner peripheral sliding surface of the cylinder, the DLC (diamond
When an ikecarbon) film, a WC / C (nanomicron-order laminate of a tungsten carbide layer and a carbide layer) film, or a resin film is formed, it is possible to prevent the aluminum alloy from adhering. Therefore, it is possible to provide a combination of a cylinder and a piston ring having excellent scuff prevention properties.

【0028】[0028]

【発明の実施の形態】以下本発明の実施の形態について
説明する。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

【0029】(第1の発明)第1の発明の粉末アルミニ
ウム合金製摺動部材は、粉末アルミニウム合金によって
形成されたマトリックスと該マトリックス中に分散され
た硬質粒子とを含む粉末アルミニウム合金製摺動部材に
おいて、粉末アルミニウム合金は、粉末アルミニウム合
金の質量を100%として12〜30%のケイ素(S
i)と1〜6%のマンガン(Mn)と1〜6%のマグネ
シウム(Mg)と残部を実質的にアルミニウム(Al)
及び不可避的不純物とからなり、かつケイ素の質量百分
率の数値とマンガンの質量百分率の数値とを掛け合わせ
た数値が30以上となる組成であり、硬質粒子は、鉄系
硬質粒子及びアルミナよりも硬さが低いセラミックス粒
子の1種以上であることを特徴とする。
(First Invention) A sliding member made of a powder aluminum alloy according to the first invention is a sliding member made of a powder aluminum alloy containing a matrix formed of the powder aluminum alloy and hard particles dispersed in the matrix. In the member, the powder aluminum alloy contains 12 to 30% of silicon (S) based on the mass of the powder aluminum alloy as 100%.
i), 1 to 6% of manganese (Mn), 1 to 6% of magnesium (Mg) and the balance substantially aluminum (Al)
And an unavoidable impurity, and a composition in which the numerical value obtained by multiplying the numerical value of the mass percentage of silicon and the numerical value of the mass percentage of manganese is 30 or more, and the hard particles are harder than the iron-based hard particles and alumina. Is one or more types of ceramic particles having a low

【0030】本発明の粉末アルミニウム合金製摺動部材
の耐摩耗性は、ケイ素とマンガンと硬質粒子の含有量が
多いと耐摩耗性に優れ、少ないと耐摩耗性が低下する。
一方ケイ素とマンガンと硬質粒子の含有量が多すぎると
製造性が低下してしまう。そこで本発明の粉末アルミニ
ウム合金製摺動部材においては、ケイ素の含有量が12
〜30%で、マンガンの含有量が1〜6%で、かつケイ
素の質量百分率の数値とマンガンの質量百分率の数値と
を掛け合わせた数値が30以上となる組成とすることに
よって、マトリックスとなる粉末アルミニウム合金自体
の耐摩耗性を向上させて硬質粒子への負担を低減するこ
とができるようにした。なおここで例えばケイ素の質量
百分率が25%でマンガンの質量百分率が5%の場合に
は、ケイ素の質量百分率の数値とマンガンの質量百分率
の数値とを掛け合わせた数値は75となる。
As for the wear resistance of the sliding member made of the powder aluminum alloy of the present invention, the wear resistance is excellent when the content of silicon, manganese and hard particles is large, and the wear resistance is lowered when the content thereof is small.
On the other hand, if the contents of silicon, manganese, and hard particles are too large, manufacturability will decrease. Therefore, in the powder aluminum alloy sliding member of the present invention, the content of silicon is 12
-30%, the manganese content is 1-6%, and the composition is such that the numerical value obtained by multiplying the numerical value of the mass percentage of silicon and the numerical value of the mass percentage of manganese is 30 or more forms a matrix. The wear resistance of the powder aluminum alloy itself is improved so that the load on the hard particles can be reduced. Here, for example, when the mass percentage of silicon is 25% and the mass percentage of manganese is 5%, the numerical value obtained by multiplying the numerical value of the mass percentage of silicon and the numerical value of the mass percentage of manganese is 75.

【0031】また本発明の粉末アルミニウム合金製摺動
部材においては、硬質粒子として鉄系硬質粒子及びアル
ミナよりも硬さが低いセラミックス粒子を用いる。即ち
鉄系硬質粒子は鉄を含むことから比較的に硬さが低い硬
質粒子である。またアルミナよりも硬さが低いセラミッ
クス粒子も比較的に硬さが低い硬質粒子である。これら
の比較的に硬さが低い硬質粒子を粉末アルミニウム合金
に含有させることによって、粉末アルミニウム合金製摺
動部材の耐摩耗性を確保しつつ、相手材への攻撃性を低
下させて摺動時における相手材の摩耗量を少なくするよ
うにすることができる。
Further, in the powder aluminum alloy sliding member of the present invention, iron-based hard particles and ceramic particles having a hardness lower than that of alumina are used as the hard particles. That is, the iron-based hard particles are hard particles having a relatively low hardness because they contain iron. Further, ceramic particles having a hardness lower than that of alumina are hard particles having a relatively low hardness. By including these hard particles having a relatively low hardness in the powder aluminum alloy, while ensuring the wear resistance of the sliding member made of the powder aluminum alloy, the aggressiveness to the mating material is reduced and the sliding It is possible to reduce the amount of wear of the mating material at.

【0032】硬質粒子の含有量は、本発明の粉末アルミ
ニウム合金製摺動部材の耐摩耗性及び相手材に対する攻
撃性を考慮して適切な量を含有させることができる。こ
の場合硬質粒子の含有量は、硬質粒子が鉄系硬質粒子の
みからなるときは、粉末アルミニウム合金製摺動部材を
100%として3〜30%であることが好ましい。また
硬質粒子がセラミックス粒子のみからなるときは、粉末
アルミニウム合金製摺動部材を100%として1〜30
%であることが好ましい。更に硬質粒子が鉄系硬質粒子
とセラミックス粒子とからなるときは、粉末アルミニウ
ム合金製摺動部材を100%として1〜30%であるこ
とが好ましい。
The hard particles may be contained in an appropriate amount in consideration of the wear resistance of the sliding member made of the powder aluminum alloy of the present invention and the aggressiveness to the mating material. In this case, the content of the hard particles is preferably 3 to 30% with the sliding member made of the powder aluminum alloy as 100% when the hard particles are composed of only iron-based hard particles. Further, when the hard particles consist only of ceramic particles, the sliding member made of the powdered aluminum alloy is set to 100% to be 1 to 30.
% Is preferable. Further, when the hard particles are composed of iron-based hard particles and ceramic particles, it is preferable that the sliding member made of the powder aluminum alloy is 1% to 30% based on 100%.

【0033】硬質粒子の含有量が多すぎると相手材に対
する攻撃性が増大して相手材の摩耗量が多くなってしま
う。逆に硬質粒子の含有量が少ないと本発明の粉末アル
ミニウム合金摺動部材の耐摩耗性が低下してしまう。ま
た硬質粒子の含有量が多すぎると、機械加工性が低下し
てしまい、それだけ製造コストが増大してしまう。
When the content of the hard particles is too large, the aggressiveness to the mating material is increased and the wear amount of the mating material is increased. On the contrary, when the content of the hard particles is small, the wear resistance of the powdery aluminum alloy sliding member of the present invention is deteriorated. On the other hand, if the content of the hard particles is too large, the machinability deteriorates and the manufacturing cost increases accordingly.

【0034】なお硬質粒子として用いられる鉄系硬質粒
子、セラミックス粒子の粒径はともに2〜20μmであ
ることが好ましい。硬質粒子の粒径が2μm未満となる
と粉末アルミニウム合金製摺動部材の耐摩耗性が低下し
てしまい、20μmを越えると相手材への攻撃性が増大
して相手材の摩耗量が増大してしまい、また機械加工性
が低下し、製造コストが増大してしまう。
The iron-based hard particles and the ceramic particles used as the hard particles each preferably have a particle size of 2 to 20 μm. If the particle diameter of the hard particles is less than 2 μm, the wear resistance of the sliding member made of powdered aluminum alloy is reduced, and if it exceeds 20 μm, the aggression to the mating material is increased and the wear amount of the mating material is increased. In addition, the machinability is lowered, and the manufacturing cost is increased.

【0035】なお本発明の粉末アルミニウム合金製摺動
部材に用いる硬質粒子としては微小硬さ即ちMHV(Mic
ro-Vikers Harness)が2000未満であることが好まし
い。アルミナ粒子のMHVは2000であり、MHVが
2000未満の硬質粒子を用いることによって相手材へ
の攻撃性を低下させて相手材の摩耗量を低下させること
ができる。
The hard particles used for the sliding member made of the powdered aluminum alloy of the present invention have a microhardness, that is, MHV (Mic
The ro-Vikers Harness) is preferably less than 2000. The MHV of the alumina particles is 2000, and by using hard particles having an MHV of less than 2000, it is possible to reduce the aggressiveness to the mating material and reduce the wear amount of the mating material.

【0036】また鉄系硬質粒子としては、ステライトN
o.1、FeW、FeMo、JPH3、高〜低炭素鉄クロ
ム(FeCrC)合金粒子を用いることができる。これ
らのうちで高〜低炭素鉄クロム合金粒子を用いることが
好ましい。高〜低炭素合金粒子は比較的に硬さの低い硬
質粒子であり、相手材への攻撃性を低下させて相手材の
摩耗量を低下させることができると共に粉末アルミニウ
ム合金製摺動部材の耐摩耗性を確保することができる。
As the iron-based hard particles, Stellite N is used.
0.1, FeW, FeMo, JPH3, high to low carbon iron chromium (FeCrC) alloy particles can be used. Of these, high to low carbon iron chromium alloy particles are preferably used. The high-to-low carbon alloy particles are hard particles having a relatively low hardness, and can reduce the aggression to the mating material and reduce the wear amount of the mating material, and at the same time improve the resistance of the powder aluminum alloy sliding member. Wearability can be secured.

【0037】またセラミックス粒子としては、ムライ
ト、SiO2、TiO2、TiC、Cr 32、MgO・A
23等の粒子を用いることができる。これらのうちム
ライト粒子を用いることが好ましい。ムライト粒子はア
ルミナ粒子よりもMHVが低く適切な硬さを有している
ので相手材への攻撃性を低下させて相手材の摩耗量を低
下させることができると共に粉末アルミニウム合金製摺
動部材の耐摩耗性を確保することができる。
Further, as the ceramic particles, mulley
G, SiO2, TiO2, TiC, Cr 3C2, MgO / A
l2O3Particles such as can be used. Of these
It is preferable to use light particles. Mullite particles are
It has a lower MHV than the Lumina particles and has an appropriate hardness.
Therefore, it reduces the aggression to the mating material and reduces the wear amount of the mating material.
Can be lowered and made of powder aluminum alloy
The wear resistance of the moving member can be ensured.

【0038】なお本発明の粉末アルミニウム合金製摺動
部材においては、上記成分以外に固体潤滑剤を必要に応
じて添加して用いることもできる。この場合固体潤滑剤
としてグラファイト、カーボン、MoS2、BN、グラ
ッシーカーボン等を用いることができる。また固体潤滑
剤は、概ね本発明の粉末アルミニウム合金製摺動部材の
質量を100%として、概ね5%以下とすることが好ま
しい。5%を超えて固体潤滑剤を添加すると製造時にお
ける押出性が低下するからである。
In the sliding member made of the powdered aluminum alloy of the present invention, a solid lubricant may be added, if necessary, in addition to the above components. In this case, graphite, carbon, MoS 2 , BN, glassy carbon or the like can be used as the solid lubricant. Further, it is preferable that the solid lubricant is approximately 5% or less, with the mass of the sliding member made of the powder aluminum alloy of the present invention being approximately 100%. This is because if the solid lubricant is added in an amount of more than 5%, the extrudability during production will be reduced.

【0039】また本発明の粉末アルミニウム合金製摺動
部材は、ウォータブラストによって相手材と摺動する摺
動面に多数の凹部が形成された粉末アルミニウム合金製
摺動部材であることが好ましい。
The powder aluminum alloy sliding member of the present invention is preferably a powder aluminum alloy sliding member having a large number of recesses formed on the sliding surface that slides on the mating member by water blast.

【0040】粉末アルミニウム合金製摺動部材の摺動面
に形成された多数の凹部は油溜まりの役割を果たすこと
によって摺動面の保油機能を確保することができ、その
結果粉末アルミニウム合金製摺動部材のスカッフ防止性
を向上させることができる。また摺動面に高圧の水を当
てることによって摺動面が加工硬化してそれだけ粉末ア
ルミニウム合金製摺動部材の耐摩耗性を向上させること
ができる。なおこのウォータブラストは、超高圧水発生
ポンプで得た超高圧水をノズルにより噴射して粉末アル
ミニウム合金製摺動部材の摺動面の表面に当てることに
よって行うことができる。
The large number of recesses formed on the sliding surface of the sliding member made of powdered aluminum alloy can ensure the oil retaining function of the sliding surface by functioning as an oil reservoir. The anti-scuff property of the sliding member can be improved. Further, by applying high-pressure water to the sliding surface, the sliding surface is work hardened, and the wear resistance of the sliding member made of powdered aluminum alloy can be improved accordingly. The water blast can be performed by jetting ultra-high pressure water obtained by an ultra-high pressure water generation pump with a nozzle and applying it to the surface of the sliding surface of the sliding member made of powdered aluminum alloy.

【0041】或いは本発明の粉末アルミニウム合金製摺
動部材は、Ni及びSnのいずれかをコーティングした
微粒子を用いたショットブラストによって相手材と摺動
する摺動面に多数の凹部が形成されると共にNi被膜及
びSn被膜のいずれかが形成された粉末アルミニウム合
金製摺動部材であることが好ましい。
Alternatively, in the sliding member made of the powdered aluminum alloy of the present invention, a large number of concave portions are formed on the sliding surface which slides on the mating material by shot blasting using fine particles coated with either Ni or Sn. It is preferable that the sliding member is made of a powder aluminum alloy on which either the Ni coating or the Sn coating is formed.

【0042】このようにNi或いはSnをコーティング
した微粒子を用いて摺動面にショットブラストを行うこ
とによって、摺動面に多数の凹部を形成すると共に摺動
相手であるピストンリング等に凝着し易いアルミニウム
合金の表面露出を抑え、Ni或いはSnの被膜を形成す
ることによってスカッフ防止性を向上させることができ
る。Ni或いはSnをコーティングした微粒子を摺動面
に当てて摺動面にNi或いはSnがアルミニウム合金と
機械的合金化(メカニカルアロイニング)してNi或い
はSnの被膜を形成することができる。このように摺動
面に形成された凹部にNi或いはSnの被膜がアルミニ
ウム合金と合金化して形成されるので、摩滅しにくく本
発明の粉末アルミニウム合金製摺動部材のスカッフ防止
性を向上させることができる。
By performing shot blasting on the sliding surface using the fine particles coated with Ni or Sn as described above, a large number of concave portions are formed on the sliding surface and adhered to the piston ring or the like which is a sliding partner. It is possible to improve the anti-scuffing property by suppressing the surface exposure of the aluminum alloy, which is easy to form, and forming a Ni or Sn film. Fine particles coated with Ni or Sn may be applied to the sliding surface, and Ni or Sn may be mechanically alloyed with the aluminum alloy (mechanical alloying) to form a Ni or Sn coating film on the sliding surface. Since the Ni or Sn coating is alloyed with the aluminum alloy in the concave portion formed on the sliding surface as described above, it is hard to wear and the scuff prevention property of the powder aluminum alloy sliding member of the present invention is improved. You can

【0043】また摺動面に形成された多数の凹部は油溜
まりの役割を果たすことによって摺動面の保油機能を確
保することができ、その結果粉末アルミニウム合金製摺
動部材のスカッフ防止性を向上させることができる。ま
た摺動面に微粒子を当てることによって摺動面が加工硬
化してそれだけ粉末アルミニウム合金製摺動部材の耐摩
耗性を向上させることができる。
Further, the large number of recesses formed on the sliding surface can ensure the oil retaining function of the sliding surface by playing the role of an oil reservoir, and as a result, the scuff preventing property of the sliding member made of the powder aluminum alloy. Can be improved. Further, by applying fine particles to the sliding surface, the sliding surface is work hardened, and the wear resistance of the powder aluminum alloy sliding member can be improved accordingly.

【0044】このようにNi及びSnのいずれかをコー
ティングした微粒子を粉末アルミニウム合金製摺動部材
に当てることによって、摺動面に微小な凹部を多数形成
することができる。
By applying the fine particles coated with either Ni or Sn to the sliding member made of powdered aluminum alloy in this manner, a large number of minute recesses can be formed on the sliding surface.

【0045】なお本発明のアルミニウム合金製摺動部材
は、従来のアルミニウム合金製摺動部材の製造方法に準
じて製造することができる。即ちエアアトマイズ法によ
って、粉末アルミニウム合金の質量を100%として1
2〜30%のケイ素と1〜6%のマンガンと1〜6%の
マグネシウムと残部を実質的にアルミニウム及び不可避
的不純物とからなり、かつケイ素の質量百分率の数値と
マンガンの質量百分率の数値とを掛け合わせた数値が3
0以上となる組成であるアルミニウム合金粉末を急冷凝
固して形成することができる。
The aluminum alloy sliding member of the present invention can be manufactured according to the conventional method for manufacturing an aluminum alloy sliding member. That is, by the air atomizing method, the mass of the powdered aluminum alloy is set to 100% and
2 to 30% of silicon, 1 to 6% of manganese, 1 to 6% of magnesium, and the balance substantially consisting of aluminum and unavoidable impurities, and a numerical value of the mass percentage of silicon and a numerical value of the mass percentage of manganese. Number multiplied by 3
It can be formed by rapidly solidifying aluminum alloy powder having a composition of 0 or more.

【0046】そしてこのアルミニウム合金粉末に高〜低
炭素鉄クロム粒子等の鉄系硬質粒子及びムライト粒子等
のアルミナよりも硬さが低いセラミックス粒子の1種以
上を添加してV型混合機等を用いて均一に混合すること
ができる。そしてこの均一に混合されたアルミニウム合
金粉末と硬質粒子とを冷間静水圧プレス等を用いてピレ
ット等の所定の形状の圧粉体を得ることができる。次に
この得られたピレット等の圧粉体を電気炉等で加熱し
て、圧粉体の温度が概ね400℃になった時点で押出機
で押し出して所定の形状の粉末アルミニウム合金製摺動
部材を形成することができる。
Then, one or more kinds of iron-based hard particles such as high to low carbon iron chromium particles and ceramic particles having a hardness lower than that of alumina such as mullite particles are added to the aluminum alloy powder, and a V-type mixer or the like is added. It can be used and mixed uniformly. Then, the uniformly mixed aluminum alloy powder and hard particles can be obtained by using a cold isostatic press or the like to obtain a green compact such as a pellet. Next, the green compact such as the obtained pellet is heated in an electric furnace or the like, and when the temperature of the green compact reaches approximately 400 ° C., it is extruded by an extruder and slid by a powder aluminum alloy of a predetermined shape. The member can be formed.

【0047】(第2の発明)第2の発明は、シリンダと
ピストンリングの組み合わせにおいて、前記シリンダの
内周摺動面は、第1の発明の粉末アルミニウム合金製摺
動部材によって構成され、シリンダの内周摺動面と摺動
するピストンリングの外周摺動面はDLC被膜、WC/
C被膜及び樹脂被膜のいずれかが形成されていることを
特徴とするシリンダとピストンリングの組み合わせであ
る。
(Second Invention) A second invention is a combination of a cylinder and a piston ring, wherein an inner peripheral sliding surface of the cylinder is constituted by the sliding member made of the powder aluminum alloy of the first invention. The outer peripheral sliding surface of the piston ring that slides with the inner peripheral sliding surface of the
It is a combination of a cylinder and a piston ring, characterized in that either a C coating or a resin coating is formed.

【0048】本発明のシリンダとピストンリングの組み
合わせにおけるシリンダの内周摺動面は、第1の発明の
粉末アルミニウム合金製摺動部材によって構成されるの
で、この部分の説明は、第1の発明の説明に譲る。
Since the inner peripheral sliding surface of the cylinder in the combination of the cylinder and the piston ring of the present invention is constituted by the sliding member made of the powder aluminum alloy of the first invention, the description of this portion will be made in the first invention. Let's turn to the explanation.

【0049】ピストンリングの外周摺動面は通常用いら
れる方法で用いて製造することができる。通常に用いら
れるピストンリングの表面に窒化処理によって窒化層を
形成しておく。そしてPVD法、CVD法、プラズマC
VD法等を用いて、DLC被膜、WC/C被膜を形成す
ることができる。
The outer peripheral sliding surface of the piston ring can be manufactured by using a commonly used method. A nitriding layer is formed on the surface of a commonly used piston ring by nitriding. And PVD method, CVD method, plasma C
The DLC film and the WC / C film can be formed by using the VD method or the like.

【0050】このようにシリンダの相手材であるピスト
ンリングの外周摺動面にDLC被膜、WC/C被膜、樹
脂被膜を形成することによって、シリンダの内周摺動面
に用いられた第1の発明の粉末アルミニウム合金製摺動
部材の粉末アルミニウム合金と凝着しにくくすることが
できる。その結果スカッフ防止性を向上することができ
る。
By thus forming the DLC film, the WC / C film, and the resin film on the outer peripheral sliding surface of the piston ring, which is the mating member of the cylinder, the first outer peripheral sliding surface of the cylinder used. It is possible to make the sliding member made of the powder aluminum alloy of the invention hard to adhere to the powder aluminum alloy. As a result, the scuff prevention property can be improved.

【0051】ピストンリングの外周摺動面にDLC被
膜、WC、樹脂被膜を形成することによって、ピストン
リングの耐摩耗性を向上させることができる。またピス
トンリングにこれらの被膜を形成することによって、優
れた摩擦係数(μ)を得ることができる。
The wear resistance of the piston ring can be improved by forming a DLC film, a WC, and a resin film on the outer peripheral sliding surface of the piston ring. By forming these coatings on the piston ring, an excellent friction coefficient (μ) can be obtained.

【0052】[0052]

【実施例】以下実施例として、本発明の粉末アルミニウ
ム合金製摺動部材を製造して各種の評価試験を行った。
以下説明する。
EXAMPLES As the following examples, the powder aluminum alloy sliding member of the present invention was manufactured and various evaluation tests were conducted.
This will be described below.

【0053】(第1評価試験:耐摩耗性及び相手材攻撃
性の評価)LFW−1摩耗試験機を用いて本発明の粉末
アルミニウム合金製摺動部材(以下「本発明材」とい
う)及び比較のための摺動部材(以下「比較材」とい
う)の摩耗量及び相手材の摩耗量を測定した。本発明材
及び比較材の摩耗量から耐摩耗性を評価し、相手材の摩
耗量から相手材攻撃性を評価した。
(First Evaluation Test: Evaluation of Abrasion Resistance and Aggressiveness of Counterpart Material) Using a LFW-1 abrasion tester, sliding member made of powder aluminum alloy of the present invention (hereinafter referred to as “invention material”) and comparison. The wear amount of the sliding member (hereinafter referred to as "comparative material") and the wear amount of the mating member were measured. The wear resistance of the material of the present invention and the comparative material was evaluated, and the aggression property of the partner material was evaluated from the wear amount of the mating material.

【0054】本評価試験では、本発明材及び比較材をテ
ストリングとし、相手材をテストブロックとした。摩耗
量の測定は、試験後のテストリング及びテストブロック
の摩耗深さを測定することによって行った。なお本発明
材及び比較材はシリンダのボア面に用いられるのでボア
材と、相手材はピストンリングに用いられるのでリング
材と表1に付記した。なお本発明材及び比較材の組成と
測定結果は表1に示した。
In this evaluation test, the material of the present invention and the comparative material were used as test rings, and the mating material was used as a test block. The amount of wear was measured by measuring the wear depth of the test ring and test block after the test. Note that the materials of the present invention and the comparative material are used as the bore surface of the cylinder, so that the material is a bore material, and the mating material is used as a piston ring. The compositions and measurement results of the material of the present invention and the comparative material are shown in Table 1.

【0055】[0055]

【表1】 [Table 1]

【0056】テストリングの本発明材及び比較材は以下
のように製造した。エアアトマイズ法を用いて、表1に
示された組成であって、42メッシュ以下の粒径のアル
ミニウム合金粉末を急冷凝固して作製した。次にこのア
ルミニウム合金粉末に表1に示された硬質粒子を添加し
て、回転翼型ミキサーで均一に混合した。この混合され
たアルミニウム合金粉末を冷間静水圧プレスによって、
直径が170mmで長さが300mmのピレットを作製
した。このピレットを電気炉で400℃にまで加熱し
て、直ちに間接押出機で直径65mmの丸棒押出材を作
製した。
The test ring material of the present invention and the comparative material were manufactured as follows. An aluminum alloy powder having a composition shown in Table 1 and having a particle size of 42 mesh or less was rapidly cooled and solidified by an air atomizing method. Next, the hard particles shown in Table 1 were added to this aluminum alloy powder and uniformly mixed with a rotary blade type mixer. By cold isostatic pressing the mixed aluminum alloy powder,
A pellet having a diameter of 170 mm and a length of 300 mm was produced. This pellet was heated to 400 ° C. in an electric furnace, and a round bar extruded material having a diameter of 65 mm was immediately produced by an indirect extruder.

【0057】次にこの丸棒押出材を機械加工して、表1
に示された本発明材及び比較材からなる外径が35m
m、軸方向の長さが11mmのテストリングを作製し
た。相手材のテストブロックは表面を窒化処理したSU
S440B材を用いた。大きさは6.3mm(縦)×1
5.7mm(横)×10mm(高さ)であった。
Next, this round bar extruded material was machined and
The outer diameter of the invention material and comparative material shown in
A test ring having m and an axial length of 11 mm was produced. The test block of the mating material is SU whose surface is nitrided.
The S440B material was used. The size is 6.3 mm (length) x 1
It was 5.7 mm (width) x 10 mm (height).

【0058】本評価試験は以下のように行った。下側に
テストリングを配置し、そのテストリングの上側にテス
トリングと当接するようにテストブロックを配置した。
潤滑油として用いられた5W−30の規格のベースオイ
ルにテストリングを油浴した状態で、テストブロックを
テストリングに荷重1764Nで押し付けつつ160r
pmの回転速度で30分間回転させて、生じたテストリ
ング及びテストブロックの摩耗深さを測定した。潤滑油
の油温は室温とした。
This evaluation test was conducted as follows. The test ring was arranged on the lower side, and the test block was arranged on the upper side of the test ring so as to contact the test ring.
While the test ring was bathed in the base oil of 5W-30 standard used as a lubricating oil, the test block was pressed against the test ring with a load of 1764N for 160r.
After rotating for 30 minutes at a rotation speed of pm, the resulting wear depth of the test ring and the test block was measured. The oil temperature of the lubricating oil was room temperature.

【0059】まず本発明材及び比較材の耐摩耗性につい
て検討する。
First, the wear resistance of the material of the present invention and the comparative material will be examined.

【0060】本発明材No.3が最も摩耗量が少なく、摩耗
深さは0.6μmである。その後本発明材No.4が摩耗深
さ0.8μm、本発明材No.2が摩耗深さ0.9μm、本
発明材No.5が摩耗深さ1.0μm、比較材No.3が摩耗深
さ1.3μm、本発明材No.1が摩耗深さ2.3μmと続
いている。これらの本発明材及び比較材はいずれも、粉
末アルミニウム合金の質量を100%としてSiの含有
量が12〜30%の間にあり、Mnの含有量が1〜6%
の間にあり、Mgの含有量が1〜6%の間にあり、かつ
Siの質量百分率の数値とMnの質量百分率の数値とを
掛け合わせた数値が30以上となっている。またいずれ
も硬質粒子を含有している。
Material No. 3 of the present invention has the smallest amount of wear and the wear depth is 0.6 μm. After that, the present invention material No. 4 has a wear depth of 0.8 μm, the present invention material No. 2 has a wear depth of 0.9 μm, the present invention material No. 5 has a wear depth of 1.0 μm, and the comparative material No. 3 has wear. The depth is 1.3 μm, and the wear depth of the present invention material No. 1 is 2.3 μm. In both of the present invention material and the comparative material, the Si content is in the range of 12 to 30% and the Mn content is 1 to 6% with the mass of the powder aluminum alloy as 100%.
, The content of Mg is between 1 and 6%, and the numerical value obtained by multiplying the numerical value of the mass percentage of Si and the numerical value of the mass percentage of Mn is 30 or more. Moreover, all contain hard particles.

【0061】一方比較材No.1及び比較材No.2は、摩耗深
さが48.2μm及び23.9μmとなって、摩耗量が
多く耐摩耗性が低い。これらの比較材はいずれもSiの
含有量が12〜30%の間にあり、Mnの含有量が1〜
6%の間にあり、Mgの含有量が1〜6%の間にあり、
かつSiの質量百分率の数値とMnの質量百分率の数値
とを掛け合わせた数値が30以上となっているが、いず
れも硬質粒子を含有していない。また比較材No.9は、摩
耗深さが35.3μmでやはり耐摩耗性が低い。この比
較材No.9も、硬質粒子を含有しておらず、またMnも含
有していない。これらのことから硬質粒子の存在が耐摩
耗性を確保することに効果があることが分かる。
On the other hand, Comparative Material No. 1 and Comparative Material No. 2 have wear depths of 48.2 μm and 23.9 μm, respectively, and have a large amount of wear and low wear resistance. In all of these comparative materials, the Si content is between 12 and 30%, and the Mn content is between 1 and 30%.
Between 6%, the content of Mg is between 1-6%,
Moreover, the numerical value obtained by multiplying the numerical value of the mass percentage of Si and the numerical value of the mass percentage of Mn is 30 or more, but none of them contains hard particles. Further, Comparative Material No. 9 has a wear depth of 35.3 μm and also has low wear resistance. This comparative material No. 9 also contained neither hard particles nor Mn. From these facts, it can be seen that the presence of hard particles is effective in ensuring wear resistance.

【0062】また比較材No.4、比較材No.6及び比較材N
o.8は、摩耗深さが15.2μm、29.3μm、1
0.3μmである。これらはいずれも硬質粒子が添加さ
れている。但し比較材No.4及び比較材No.6は、いずれも
Siの含有量が12〜30%の間にあり、Mnの含有量
が1〜6%の間にあり、Mgの含有量が1〜6%の間に
あるが、Siの質量百分率の数値とMnの質量百分率の
数値とを掛け合わせた数値が12及び15であって、3
0以上ではない。また比較材No.8は、Siの含有量が4
0%であるが、Mnは含有されていない。従ってSiの
質量百分率の数値とMnの質量百分率の数値とを掛け合
わせた数値は0である。これらのことからSiの含有量
が12〜30%の間にあり、Mnの含有量が1〜6%の
間にあり、Mgの含有量が1〜6%の間にあり、かつS
iの質量百分率の数値とMnの質量百分率の数値とを掛
け合わせた数値が30以上であると、マトリックスであ
るアルミニウム粉末合金自体の耐摩耗性を確保すること
に効果があることが分かる。
Comparative material No. 4, comparative material No. 6 and comparative material N
o.8 has wear depths of 15.2 μm, 29.3 μm and 1
It is 0.3 μm. Hard particles are added to all of these. However, in both Comparative Material No. 4 and Comparative Material No. 6, the content of Si is between 12 and 30%, the content of Mn is between 1 and 6%, and the content of Mg is 1 The value obtained by multiplying the numerical value of the mass percentage of Si and the numerical value of the mass percentage of Mn is 12 and 15, but is between 3 and 6%, and 3
Not 0 or more. Comparative material No. 8 has a Si content of 4
Although it is 0%, Mn is not contained. Therefore, the numerical value obtained by multiplying the numerical value of the mass percentage of Si and the numerical value of the mass percentage of Mn is 0. From these facts, the Si content is in the range of 12 to 30%, the Mn content is in the range of 1 to 6%, the Mg content is in the range of 1 to 6%, and S
It can be seen that when the value obtained by multiplying the numerical value of the mass percentage of i and the numerical value of the mass percentage of Mn is 30 or more, it is effective in ensuring the wear resistance of the aluminum powder alloy itself which is the matrix.

【0063】また比較材No.1と比較材No.2とを比較する
と、SiとMnの含有量の多い比較材No.2の方が耐摩耗
性が向上していることが分かる。SiとMnの含有量を
多くすることによって粉末アルミニウム合金自体の耐摩
耗性を向上させることができ、Mnの含有によって粉末
アルミニウム合金自体の耐摩耗性を向上させることがわ
かる。
Further, comparing the comparative material No. 1 with the comparative material No. 2, it can be seen that the comparative material No. 2 having a larger content of Si and Mn has improved wear resistance. It can be seen that the wear resistance of the powder aluminum alloy itself can be improved by increasing the contents of Si and Mn, and the wear resistance of the powder aluminum alloy itself can be improved by containing Mn.

【0064】即ち一般的に粉末アルミニウム合金の質量
を100%としてSiの含有量が12〜30%の間にあ
り、Mnの含有量が1〜6%の間にあり、Mgの含有量
が1〜6%の間にあり、かつSiの質量百分率の数値と
Mnの質量百分率の数値とを掛け合わせた数値が30以
上であって、更に硬質粒子を含有していると、アルミニ
ウム粉末合金製摺動部材の耐摩耗性に優れることが分か
る。
That is, generally, the content of Si is between 12 and 30%, the content of Mn is between 1 and 6%, and the content of Mg is 1 with the mass of the powdered aluminum alloy as 100%. If it is between 6% and 6 and the numerical value obtained by multiplying the numerical value of the mass percentage of Si and the numerical value of the mass percentage of Mn is 30 or more and further contains hard particles, the aluminum powder alloy slide It can be seen that the dynamic member has excellent wear resistance.

【0065】次に本発明材及び比較材の相手攻撃性即ち
相手材の摩耗量について検討する。
Next, the opponent attack of the material of the present invention and the comparative material, that is, the amount of wear of the opponent material will be examined.

【0066】本発明材No.1、本発明材No.2、本発明材N
o.3、本発明材No.4、本発明材No.5、本発明材No.6、本
発明材No.7及び本発明材No.8は、相手材(リング材)の
摩耗深さがそれぞれ2.6μm、2.1μm、0.4μ
m、0.7μm、1.1μm、1.4μm、0.7μm
及び0.8μmである。いずれも鉄を含有しておらず、
硬質粒子としては炭素鉄クロム合金(FeCrC)粒子
或いはムライト粒子を含有している。
Inventive Material No. 1, Inventive Material No. 2, Inventive Material N
o.3, Inventive material No. 4, Inventive material No. 5, Inventive material No. 6, Inventive material No. 7 and Inventive material No. 8 are wear depth of mating material (ring material) 2.6 μm, 2.1 μm, 0.4 μ respectively
m, 0.7 μm, 1.1 μm, 1.4 μm, 0.7 μm
And 0.8 μm. Neither contains iron,
The hard particles include carbon iron chromium alloy (FeCrC) particles or mullite particles.

【0067】比較材について検討すると、鉄を含有せず
かつアルミナのみを硬質粒子として用いた比較材No.5及
び比較材No.8は、相手材の摩耗深さが6.6μm及び
6.1μmとなっている。これらから硬質粒子のうちで
もアルミナのような比較的硬い硬質粒子を用いると相手
材の摩耗が大きくなることと考えられる。
When the comparative materials were examined, the comparative materials No. 5 and No. 8 containing no iron and using only alumina as hard particles had the wear depths of the mating materials of 6.6 μm and 6.1 μm. Has become. From these facts, it is considered that the use of relatively hard hard particles such as alumina among the hard particles will increase the wear of the mating material.

【0068】更に鉄とアルミナの双方を含有している比
較材No.3、比較材No.4及び比較材No.7は、相手材の摩耗
深さが7.1μm、6.3μm及び5.2μmとなって
おり、やはり相手材の摩耗が大きくなっている。これに
対して鉄を含有せずかつ硬質粒子としてムライトを含有
している比較材No.6は、相手材の摩耗深さが0.5μm
となっており、相手材の摩耗量は小さくなっている。こ
れらのことから鉄及びアルミナの存在が相手材の摩耗量
を大きくしていると考えられる。また比較材No.3及び比
較材No.4のように硬質粒子を複合添加してもアルミナを
含むことから、相手材の摩耗量が大きくなっていると考
えられる。
Further, in Comparative Material No. 3, Comparative Material No. 4 and Comparative Material No. 7, which contained both iron and alumina, the wear depths of the mating materials were 7.1 μm, 6.3 μm and 5. It is 2 μm, and the wear of the mating material is also large. On the other hand, the comparative material No. 6, which does not contain iron and contains mullite as hard particles, has a wear depth of the mating material of 0.5 μm.
Therefore, the amount of wear of the mating material is small. From these facts, it is considered that the presence of iron and alumina increases the amount of wear of the mating material. Further, even if the hard particles are added together as in the comparative material No. 3 and the comparative material No. 4, since the alumina is contained, it is considered that the amount of wear of the mating material is large.

【0069】(第2評価試験:腐食雰囲気下の耐摩耗性
及び相手材攻撃性の評価)ピンオンディスク摩耗試験機
を用いて腐食雰囲気下の本発明の粉末アルミニウム合金
製摺動部材(以下「本発明材」という)及び比較のため
の摺動部材(以下「比較材」という)の摩耗量及び相手
材の摩耗量を測定して、耐摩耗性及び相手材攻撃性を評
価した。なお図1に本評価試験の概要を示す。
(Second Evaluation Test: Evaluation of Abrasion Resistance in Corrosive Atmosphere and Attack of Counterpart Material) A sliding member made of the powder aluminum alloy of the present invention in a corrosive atmosphere (hereinafter referred to as " The wear amount of the sliding member (hereinafter referred to as "comparative material") for comparison and the wear amount of the mating material were measured to evaluate the wear resistance and the attacking property of the mating material. The outline of this evaluation test is shown in FIG.

【0070】本評価試験では、シリンダライナのボア面
に用いることができる材料即ちシリンダボア材である本
発明材及び比較材を下側試片Aとした。その下側試片A
の相手材としてピストンリング材を切り出して上側試片
Bとした。摩耗量の測定は、試験後の下側試片及び上側
試片の摩耗深さを測定することによって行った。本発明
材及び比較材の組成と測定結果は表2に示した。
In this evaluation test, a lower sample A was used as the material for the bore surface of the cylinder liner, that is, the present invention material and the comparative material which are cylinder bore materials. The lower sample A
A piston ring material was cut out as a mating material of the above and used as an upper test piece B. The amount of wear was measured by measuring the wear depth of the lower and upper test pieces after the test. The compositions and measurement results of the present invention material and the comparative material are shown in Table 2.

【0071】[0071]

【表2】 [Table 2]

【0072】本評価試験の下側試片Aの本発明材及び比
較材は以下のように製造した。
The material of the present invention and the comparative material of the lower test piece A of this evaluation test were manufactured as follows.

【0073】まず第1評価試験の場合と同様に、エアア
トマイズ法を用いて、表2に示された組成であって、4
2メッシュ以下の粒径のアルミニウム合金粉末を急冷凝
固して作製した。次にこのアルミニウム合金粉末に表1
に示された硬質粒子を添加して、回転翼型ミキサーで均
一に混合した。この混合されたアルミニウム合金粉末を
冷間静水圧プレスによって、直径が170mmで長さが
300mmのピレットを作製した。このピレットを電気
炉で400℃にまで加熱して、直ちに間接押出機で直径
65mmの丸棒押出材を作製した。
First, as in the case of the first evaluation test, by using the air atomizing method, the composition shown in Table 2 was
It was produced by rapidly solidifying aluminum alloy powder having a grain size of 2 mesh or less. Next, Table 1
The hard particles shown in 1 above were added and uniformly mixed with a rotary blade mixer. The mixed aluminum alloy powder was subjected to cold isostatic pressing to prepare a pellet having a diameter of 170 mm and a length of 300 mm. This pellet was heated to 400 ° C. in an electric furnace, and a round bar extruded material having a diameter of 65 mm was immediately produced by an indirect extruder.

【0074】次にこの押出材を機械加工して、表2に示
された本発明材及び比較材からなる30mm×30mm
×5mm(板厚)の下側試片Aを作製した。
Next, this extruded material was machined to a size of 30 mm × 30 mm composed of the material of the present invention and the comparative material shown in Table 2.
A lower sample A of × 5 mm (plate thickness) was produced.

【0075】相手材の上側試片Bとして、ボア径85m
m用SUS440Bガス窒化製ピストンリングを長さ1
5mmに切断したものを用いた。
As the upper test piece B of the mating material, the bore diameter is 85 m.
SUS440B gas nitriding piston ring for m length 1
The one cut into 5 mm was used.

【0076】本評価試験は以下のように行った。まず下
側に下側試片Aを配置し、その上側に下側試片Aと当接
するように上側試片Bを配置して、下側試片A及び上側
試片Bを質量パーセント濃度が20%の硫酸水溶液に含
浸させた。そしてこの状態で上側試片Bを下側試片Aに
荷重50Nで押し付けつつ、下側試片を0.6m/sの
回転速度で30分間回転させて、その時の下側試片A及
び上側試片Bの摩耗深さを測定した。
This evaluation test was conducted as follows. First, the lower test piece A is arranged on the lower side, and the upper test piece B is arranged on the upper side thereof so as to come into contact with the lower test piece A. It was impregnated with a 20% aqueous sulfuric acid solution. Then, while pressing the upper test piece B against the lower test piece A with a load of 50 N in this state, the lower test piece is rotated for 30 minutes at a rotation speed of 0.6 m / s, and the lower test piece A and the upper test piece at that time are rotated. The wear depth of the sample B was measured.

【0077】本発明材No.3の摩耗深さは2.2μmであ
るのに対して、比較材No.7、比較材No.9及び比較材No.1
0の摩耗深さは、それぞれ17.1μm、22.1μm
及び10.1μmとなっている。Fe及びCuを含有し
ていない本発明材No.3は、Fe及びCuの少なくとも1
種以上を含んでいるこれらの比較材よりも腐食雰囲気下
においても耐摩耗性に優れていることが分かる。
The wear depth of the material No. 3 of the present invention is 2.2 μm, while the wear depth of the comparative material No. 7, the comparative material No. 9 and the comparative material No. 1
Wear depths of 0 are 17.1 μm and 22.1 μm, respectively
And 10.1 μm. The material No. 3 of the present invention which does not contain Fe and Cu is at least 1 of Fe and Cu.
It can be seen that the wear resistance is superior even in a corrosive atmosphere to these comparative materials containing at least one kind.

【0078】相手材の摩耗深さは、本発明材No.3におい
ては、3.0μmであるのに対して、比較材No.7、比較
材No.9及び比較材No.10においては、それぞれ51.4
μm、0.0μm及び30.6μmである。硬質粒子と
してアルミナ粒子或いはSiC粒子を含有し、また粉末
アルミニウム合金の組成にFeを含有している比較材N
o.7と比較材No.10は、相手材攻撃性が大きく、相手材の
摩耗量が大きくなっていることが分かる。これに対して
Feを含有せずかつ硬質粒子を含有しない比較材No.9は
相手材の摩耗量がない。
The wear depth of the mating material is 3.0 μm in the material No. 3 of the present invention, while in the material No. 3 of the present invention, in the material No. 7, the comparative material No. 9 and the material No. 10 of the comparison, 51.4 each
μm, 0.0 μm and 30.6 μm. Comparative material N containing alumina particles or SiC particles as hard particles and Fe in the composition of the powder aluminum alloy
It can be seen that o.7 and comparative material No. 10 have a large attacking property of the mating material and a large amount of wear of the mating material. On the other hand, the comparative material No. 9 containing no Fe and containing no hard particles has no wear amount of the mating material.

【0079】これらのことからFe及びCuの1種以上
を含有すると腐食雰囲気下における耐摩耗性が低下し、
またFeを含有し、また硬質粒子のうちでも比較的硬い
アルミナ、SiCを含有していると相手材の摩耗量が大
きくなることが分かる。
From these facts, when one or more of Fe and Cu is contained, the wear resistance in a corrosive atmosphere decreases,
Further, it is found that the amount of wear of the mating material becomes large when Fe is contained and when alumina and SiC which are relatively hard among the hard particles are contained.

【0080】(第3評価試験:枯渇潤滑下におけるスカ
ッフ防止性の評価)往復動摩耗試験機を用いて、本発明
の粉末アルミニウム合金製摺動部材(以下「本発明材」
という)及び比較のため摺動部材(以下「比較材」とい
う)をピストンリング材とを摺動させてスカッフ防止性
を評価した。本評価試験の概要を図2に示す。本評価試
験ではシリンダボア材に用いることができる本発明材及
び比較材に仕上げ加工を施したものを下側試片Cとし、
ピストンリング材を切り出して表面処理を施したものを
上側試片Dとした。スカッフ防止性は、本評価試験を開
始してから摩擦係数が急上昇してスカッフが発生する時
間までを測定して評価した。なお本評価試験で用いられ
た下側試片Cと上側試片Dの組み合わせと測定結果を表
3に示した。なお表3の粗さは十点平均粗さ(Rz)で
示した。
(Third Evaluation Test: Evaluation of Scuffing Prevention Property Under Exhaust Lubrication) A sliding member made of the powder aluminum alloy of the present invention (hereinafter referred to as "material of the present invention") was tested using a reciprocating wear tester.
For comparison, a sliding member (hereinafter referred to as "comparative material") was slid on the piston ring material to evaluate the scuffing prevention property. The outline of this evaluation test is shown in FIG. In the present evaluation test, the lower test piece C is obtained by subjecting the material of the present invention and the comparative material, which can be used for the cylinder bore material, to finishing,
An upper test piece D was obtained by cutting out the piston ring material and subjecting it to surface treatment. The anti-scuffing property was evaluated by measuring the time from the start of this evaluation test to the time when the friction coefficient rapidly increased and the scuffing occurred. Table 3 shows the combination of the lower test piece C and the upper test piece D used in this evaluation test and the measurement results. The roughness in Table 3 is shown as a ten-point average roughness (Rz).

【0081】[0081]

【表3】 [Table 3]

【0082】下側試片Cとして用いる本発明材No.3及び
本発明材No.8は、第2評価試験の場合と同様の方法で、
同様の形状に作成したものである。従って形状は、30
mm×30mm×5mm(板厚)である。なお本発明材
No.3及び本発明材No.8の組成は、表1に示すとおりであ
る。更にこのように作製された本発明材No.3及び本発明
材No.8の表面に表3に示された仕上げ加工方法を施し
た。即ち仕上げホーニング、微粒ショットNiコート仕
上げ、微粒ショットSnコート仕上げ、ウォータブラス
ト処理仕上げ、微粒ショット仕上げを行った。ここで
「ウォータブラスト処理仕上げ」とはウォータブラスト
によって摺動面に多数の凹部が形成する処理方法をい
い、「微粒ショットNiコート仕上げ」とは、Niをコ
ーティングした微粒子を用いたショットブラストによっ
て表面に多数の凹部を形成すると共にNi被膜を形成す
る処理方法を、「微粒ショットSnコート仕上げ」と
は、Snをコーティングした微粒子を用いたショットブ
ラストによって相手材と摺動する摺動面に多数の凹部を
形成すると共にSn被膜を形成する処理方法をいう。
「微粒ショット仕上げ」とは通常のショットブラストを
言う。
Material Nos. 3 and 8 of the present invention used as the lower test piece C were prepared in the same manner as in the second evaluation test.
It was created in the same shape. Therefore, the shape is 30
It is mm × 30 mm × 5 mm (plate thickness). The material of the present invention
The compositions of No. 3 and invention material No. 8 are as shown in Table 1. Further, the finishing processing methods shown in Table 3 were applied to the surfaces of the invention material No. 3 and the invention material No. 8 thus produced. That is, finish honing, fine shot Ni coat finish, fine shot Sn coat finish, water blast treatment finish, and fine shot finish were performed. Here, "water blast treatment finish" refers to a treatment method in which a large number of recesses are formed on the sliding surface by water blast, and "fine grain shot Ni coat finish" means surface treatment by shot blast using fine particles coated with Ni. The treatment method of forming a large number of concave portions and a Ni coating on the surface is "fine-grain shot Sn coat finish", which means that a large number of concave portions are formed on a sliding surface that slides on a mating material by shot blasting using Sn-coated fine particles. It refers to a treatment method of forming a recess and forming a Sn coating.
"Fine grain shot finish" refers to normal shot blasting.

【0083】下側試片Cの比較材として鋳鉄F230及
びアルミニウム合金A390・T6を用いた。鋳鉄F2
30の表面には仕上げホーニングを施した。またA39
0・T6の表面には電解加工(ECM)処理を施した。
形状は本評価試験で用いられた本発明材と同一とした。
なおA390とは、Al−Si−Cu−Mg合金であっ
て、全体の質量を100%として、Siが17%、Cu
が4.5%、Mgが0.5%で、残余がAlのアルミニ
ウム合金をいう。
Cast iron F230 and aluminum alloy A390.T6 were used as comparative materials for the lower test piece C. Cast iron F2
The surface of 30 was subjected to finishing honing. Also A39
The surface of 0 · T6 was subjected to electrolytic processing (ECM).
The shape was the same as that of the material of the present invention used in this evaluation test.
Note that A390 is an Al-Si-Cu-Mg alloy, where the total mass is 100%, Si is 17%, Cu is
Is 4.5%, Mg is 0.5%, and the balance is Al.

【0084】ピストンリング材として用いられる上側試
片Dとしては、ボア径85mm用SUS440Bガス窒
化製ピストンリングを長さ15mmに切断したものを用
いた。
As the upper test piece D used as the piston ring material, a piston ring made of SUS440B gas nitriding for a bore diameter of 85 mm and cut to a length of 15 mm was used.

【0085】表面処理は、表3にあるように、単に窒化
処理をすることによる表面処理と窒化処理をしてその上
にクロム(Cr)をメッキすることによる表面処理であ
る。
As shown in Table 3, the surface treatment is a surface treatment by simply performing a nitriding treatment and a surface treatment by performing a nitriding treatment and then plating chromium (Cr) thereon.

【0086】試験は、上側試片Dの先端が下側試片Cの
表面に垂直になるように当接して上側試片Dを49Nで
加重した状態で、下側試片Cを往復距離30mm、往復
速度7Hzで往復動させて、摩擦係数が急に上昇する時
点を測定した。潤滑油は5w30ベースオイルを用い
て、試験前に下側試片Cの摺動面に微量塗布するのみで
以後試験終了まで補給しなかった。温度は室温で行っ
た。
In the test, the lower test piece C was reciprocated at a reciprocating distance of 30 mm while the upper test piece D was contacted so that the tip of the upper test piece D was perpendicular to the surface of the lower test piece C and the upper test piece D was weighted with 49 N. Reciprocation was carried out at a reciprocating speed of 7 Hz, and the time when the friction coefficient suddenly increased was measured. As the lubricating oil, 5w30 base oil was used, and only a small amount was applied to the sliding surface of the lower test piece C before the test, and it was not replenished until the end of the test. The temperature was room temperature.

【0087】組み合わせNo.1、No.2及びNo.3における下
側試片Cの仕上げ方法はいずれも仕上げホーニングであ
る。この下側試片Cの相手材である上側試片Dの表面処
理は、それぞれ樹脂コート、WC/Cコート、DLCコ
ートである。いずれも組み合わせNo.7の場合更にはNo.8
の場合よりも摩擦係数が急に上昇する時間が長くなって
いる。このことから本発明材を用いて作製されたシリン
ダボア材の相手材であるピストンリング材に樹脂コー
ト、WC/Cコート、DLCコートを形成することがス
カッフ防止に役立つことが分かる。即ちシリンダボア材
が鏡面化していてもピストンリングに樹脂コート、WC
/Cコート、DLCコートを形成することによってスカ
ッフ防止性を向上させると考えられる。
The finishing method for the lower test piece C in the combinations No. 1, No. 2 and No. 3 is finishing honing. The surface treatment of the upper sample D, which is the counterpart of the lower sample C, is resin coating, WC / C coating, and DLC coating, respectively. In case of combination No.7, further No.8
The time for the friction coefficient to rise sharply is longer than in the case. From this, it can be seen that forming a resin coating, a WC / C coating, or a DLC coating on the piston ring material, which is the counterpart of the cylinder bore material produced using the material of the present invention, helps prevent scuffing. That is, even if the cylinder bore material is mirror-finished, the piston ring is coated with resin, WC
It is considered that the anti-scuffing property is improved by forming the / C coat and the DLC coat.

【0088】組み合わせNo.4、No.5、No.6、No.7、No.8
においては下側試片はいずれも本発明材No.8であり、相
手材である上側試片Dの表面処理はいずれも窒化処理で
ある。しかし組み合わせNo.4、No.5及びNo.6における下
側試片Cの仕上げ方法はそれぞれ微粒ショットNiコー
ト仕上げ、微粒ショットSnコート仕上げ及びウォータ
ブラスト処理仕上げとなっており、いずれも摩擦係数が
急に上昇する時間は25分以上経過してからである。こ
れらに対して組み合わせNo.7、No.8においては下側試片
Cの仕上げ方法は、それぞれ仕上げホーニング、微粒シ
ョット仕上げとなっており、摩擦係数が急に上昇する時
間はそれぞれ2分弱、4分と短いものとなっている。
Combination No.4, No.5, No.6, No.7, No.8
In the above, all of the lower side specimens are No. 8 materials of the present invention, and the surface treatment of the upper side specimen D, which is the mating material, is nitriding treatment. However, the finishing method of the lower sample C in the combinations No. 4, No. 5 and No. 6 is fine grain shot Ni coat finish, fine grain shot Sn coat finish and water blast treatment finish, respectively. The time of sudden rise is after 25 minutes or more have passed. On the other hand, in the combinations No. 7 and No. 8, the finishing method of the lower test piece C is finish honing and fine grain shot finishing, respectively, and the time when the friction coefficient suddenly increases is less than 2 minutes. It is as short as 4 minutes.

【0089】微粒ショットNiコート仕上げ、微粒ショ
ットSnコート仕上げ及びウォータブラスト処理仕上げ
等と仕上げホーニングとを比較すると、微粒ショットN
iコート仕上げ、微粒ショットSnコート仕上げ及びウ
ォータブラスト処理仕上げ等の方が仕上げホーニングよ
りはスカッフ防止性に優れているといえる。仕上げホー
ニングは表面が鏡面化し易いためにスカッフ防止性が不
十分になると考えられる。また微粒ショットも仕上げホ
ーニングよりはスカッフ防止性が向上しているが、微粒
ショットSnコート仕上げ及びウォータブラスト処理仕
上げ等と比較するとまだ不十分と考えられる。これらの
ことから本発明材を用いて作製されたシリンダボア材に
微粒ショットNiコート仕上げ、微粒ショットSnコー
ト仕上げ及びウォータブラスト処理仕上げを施すことは
スカッフ防止性の向上させることができることが分か
る。
When fine grain shot Ni coat finish, fine grain shot Sn coat finish and water blast treatment finish and finish honing are compared, fine grain shot N
It can be said that the i-coat finish, the fine-grain shot Sn coat finish, the water blast treatment finish, and the like are more excellent in the scuff prevention property than the finish honing. It is considered that the finish honing has insufficient scuffing resistance because the surface tends to be mirror-finished. Further, fine grain shots have improved scuffing prevention properties as compared with finish honing, but it is considered to be still insufficient as compared with fine grain shots Sn coat finish and water blast treatment finish. From these facts, it is understood that the scuff prevention property can be improved by subjecting the cylinder bore material produced by using the material of the present invention to the fine shot Ni coat finish, the fine shot Sn coat finish and the water blast treatment finish.

【0090】組み合わせNo.9、No.10及びNo.11は、組み
合わせNo.4、No.5及びNo.6によりは摩擦係数が急に上昇
するまでの時間が短くなっている。また組み合わせNo.7
とNo.10を比較すると、この2つはシリンダボア材の材
料を除いて他の条件は同一である。この場合でも本発明
材No.8を用いた組み合わせNo.7の方が摩擦係数が急に上
昇する時間が長くなっている。従って本発明材は、従来
の鋳鉄よりはスカッフ防止性が向上していると考えられ
る。
The combinations No. 9, No. 10 and No. 11 have a shorter time until the friction coefficient suddenly increases depending on the combinations No. 4, No. 5 and No. 6. Combination No. 7
When comparing No. 10 with No. 10, the other two are the same except for the material of the cylinder bore material. Even in this case, the combination No. 7 using the material No. 8 of the present invention has a longer time in which the friction coefficient sharply increases. Therefore, it is considered that the material of the present invention has improved scuffing resistance as compared with the conventional cast iron.

【0091】また本発明材に微粒ショットNiコート仕
上げ、微粒ショットSnコート仕上げ及びウォータブラ
スト処理仕上げを施すことは、従来の鋳鉄、或いはA3
90・T6を用いた場合よりもスカッフ防止性の向上さ
せることができることと考えることができる。
The fine grain shot Ni coat finish, the fine grain shot Sn coat finish and the water blast treatment finish can be applied to the material of the present invention by using conventional cast iron or A3.
It can be considered that the anti-scuffing property can be improved as compared with the case of using 90T6.

【0092】(第4評価試験:摩擦特性の評価)先に述
べた枯渇潤滑下におけるスカッフ防止性の評価試験と同
様に、往復動摩耗試験機を用いて、本発明の粉末アルミ
ニウム合金製摺動部材(以下「本発明材」という)及び
比較のため摺動部材(以下「比較材」という)をピスト
ンリング材とを摺動させて摩擦特性を評価した。
(Fourth Evaluation Test: Evaluation of Friction Characteristics) Similar to the evaluation test of the scuff prevention property under the depletion lubrication described above, the sliding motion made of the powder aluminum alloy of the present invention was measured by using the reciprocating wear tester. Friction characteristics were evaluated by sliding a member (hereinafter referred to as "material of the present invention") and a sliding member (hereinafter referred to as "comparative material") for comparison with a piston ring material.

【0093】本評価試験の概要は、第3評価試験と同様
に、図2を用いて示すことができる。本評価試験におい
てもシリンダボア材に用いることができる本発明材及び
比較材に仕上げ加工を施したものを下側試片Cとし、ピ
ストンリング材を切り出して上側試片Dとした。摩擦特
性は、本評価試験を開始してから摩擦係数(μ)が安定
した時点の摩擦係数を測定した評価した。
An outline of this evaluation test can be shown by using FIG. 2 as in the third evaluation test. Also in this evaluation test, a lower test piece C was obtained by finishing the present invention material and the comparative material which can be used as the cylinder bore material, and the piston ring material was cut out to obtain an upper test piece D. The friction characteristics were evaluated by measuring the friction coefficient when the friction coefficient (μ) became stable after starting this evaluation test.

【0094】下側試片Cの材料、その仕上げ加工方法及
び表面粗さと上側試片Dとして用いた材料の表面処理方
法との組み合わせは、組み合わせNo.12を除いて、第3
評価試験における組み合わせから選択した。その組み合
わせ及びその測定結果を表4に示した。即ちNo.1、No.
7、No.9及びNo.11は、第3評価試験と同一の組み合わせ
であり、No.12は新たな組み合わせである。
The combination of the material of the lower test piece C, its finishing method and the surface roughness and the surface treatment method of the material used as the upper test piece D, except for the combination No. 12, is the third.
Selected from the combinations in the evaluation test. The combinations and the measurement results are shown in Table 4. That is, No. 1, No.
No. 7, No. 9 and No. 11 are the same combination as the third evaluation test, and No. 12 is a new combination.

【0095】なお各組合わせにかかる下側試片C及び上
型試片Dの製造方法及び形状は、第3評価試験の場合と
同一であるので、第3評価試験における説明に譲る。
Since the manufacturing method and the shape of the lower sample C and the upper sample D for each combination are the same as those in the third evaluation test, the description in the third evaluation test will be omitted.

【0096】[0096]

【表4】 [Table 4]

【0097】本評価試験は、潤滑油として用いられた5
W−30の規格のベースオイルに油浴の状態で、上側試
片Dの先端が下側試片Cの表面に垂直になるように当接
して上側試片Dを49Nで加重しつつ下側試片Cを往復
距離40mm、往復速度5Hzで往復動させて、摩擦係
数が安定した時の摩擦係数を測定した。なお潤滑油の油
温は室温とした。
In this evaluation test, 5 used as a lubricating oil was used.
While the base oil of W-30 standard is in an oil bath, the tip of the upper test piece D is contacted so as to be perpendicular to the surface of the lower test piece C, and the upper test piece D is weighted with 49N while the lower test piece is being weighted. The piece C was reciprocated at a reciprocating distance of 40 mm and a reciprocating speed of 5 Hz to measure the friction coefficient when the friction coefficient became stable. The oil temperature of the lubricating oil was room temperature.

【0098】組み合わせNo.1及びNo.7はそれぞれ本発明
材No.3及び本発明材No.8を用いており、いずれも仕上げ
ホーニングを表面に施している。相手材のピストンリン
グの表面処理は、組み合わせNo.1では樹脂コートであ
り、組み合わせNo.7では窒化処理である。相手材が樹脂
コートであっても窒化処理であっても優れた摩擦係数を
得ることができる。仕上げホーニングによる表面が鏡面
化でき、凝着部剪断力の小さい材料のため、比較材を用
いた組み合わせNo.9、No.12及びNo.11より摩擦係数が小
さくなっていると考えられる。
The combinations No. 1 and No. 7 use the present invention material No. 3 and the present invention material No. 8, respectively, and both have finish honing on the surface. The surface treatment of the mating piston ring is resin coating for combination No. 1 and nitriding for combination No. 7. An excellent friction coefficient can be obtained regardless of whether the mating material is a resin coat or a nitriding treatment. It is considered that the friction coefficient is smaller than that of the combinations No. 9, No. 12 and No. 11 using the comparative material, because the surface by finish honing can be mirror-finished and the shearing force at the adhesion part is small.

【0099】組み合わせNo.9及びNo.12において用いら
れた鋳鉄FC230が仕上げホーニングの場合は、相手
材にCrメッキを施しても摩擦係数が大きくなってい
る。鋳鉄FC230は鏡面化しにくく、凝着部剪断力が
大きい材料のために摩擦係数が大きくなっていると考え
られる。なお組み合わせNo.9及びNo.12においては仕上
げホーニングした鋳鉄FC230の表面の粗さが異なっ
ている。粗さが大きい組み合わせNo.9の方が、組み合わ
せNo.7よりも摩擦係数が大きくなっている。
When the cast iron FC230 used in the combinations No. 9 and No. 12 is the finish honing, the friction coefficient is large even if the mating material is plated with Cr. It is considered that the cast iron FC230 is hard to be mirror-finished and has a large friction coefficient due to the material having a large shearing force at the adhesion portion. Incidentally, in the combinations No. 9 and No. 12, the surface roughness of the finish-honed cast iron FC230 is different. The combination No. 9 having a larger roughness has a larger friction coefficient than the combination No. 7.

【0100】(第5評価試験:製造性等の評価)本発明
材No.1、本発明材No.3、本発明材No.7、本発明材No.8、
比較材No.3、比較材No.7、比較材No.8及び比較材No.9に
ついて、製造性を評価した。製造性の評価は、上記長尺
材押出機に押し出すときの押出時の押出初圧及び押出さ
れた長尺材の表面のクラック、かじり、仕上がり状況観
察結果で判断した。押出初圧から押出性を評価し、表面
のクラック、かじり、仕上がり状況観察から加工性を評
価し、その両者を合わせて製造性を評価した。即ち押出
性及び加工性が共に良好な場合を製造性を良好として◎
とした。押出性は問題ないが加工性に問題がある場合を
製造性をやや良いとして○とした。押出性に問題があっ
て押し出せないか、或いは押出性及び加工性のいずれも
問題がある場合を製造性を悪いとして×とした。
(Fifth Evaluation Test: Evaluation of Manufacturability, etc.) Inventive Material No. 1, Inventive Material No. 3, Inventive Material No. 7, Inventive Material No. 8,
Manufacturability was evaluated for Comparative Material No. 3, Comparative Material No. 7, Comparative Material No. 8 and Comparative Material No. 9. The evaluation of the manufacturability was judged by the extrusion initial pressure at the time of extrusion into the long material extruder and cracks, galling on the surface of the extruded long material, and the result of observation of the finished state. The extrudability was evaluated from the initial extrusion pressure, the surface cracks, galling, and the workability were evaluated from the observation of the finished state, and both were combined to evaluate the manufacturability. That is, when both extrudability and processability are good, manufacturability is considered to be good.
And When the extrudability was not a problem, but the processability was a problem, the manufacturability was considered to be slightly good, and the result was rated as “good”. When there was a problem in extrudability and could not be extruded, or there was a problem in both extrudability and processability, the manufacturability was considered to be poor, and the result was marked with x.

【0101】なお製造方法は、長尺材押出機で押し出す
までは、第1評価試験で示した製造方法と同一の方法製
造した。従ってその部分の説明は第1評価試験における
説明に譲る。なお製造した長尺材は、薄肉のパイプ状の
長尺材であった。
The manufacturing method was the same as the manufacturing method shown in the first evaluation test until it was extruded by the long material extruder. Therefore, the description of that portion will be omitted from the description in the first evaluation test. The manufactured long material was a thin pipe-shaped long material.

【0102】本評価試験で用いられた本発明材及び比較
材の組成及び評価結果を表5に示す。
Table 5 shows the compositions and evaluation results of the material of the present invention and the comparative material used in this evaluation test.

【0103】[0103]

【表5】 [Table 5]

【0104】本発明材は、いずれも押出性が良好であ
る。即ち単に厚肉材だけではなく、薄肉材の押出性につ
いても問題がないと考えられる。
All the materials of the present invention have good extrudability. That is, it is considered that there is no problem in the extrudability of not only thick materials but also thin materials.

【0105】これに対して比較材No.3、比較材No.7、比
較材No.8及び比較材No.9はいずれも製造性が悪かった。
これらは厚肉長尺材については問題はないが、薄肉材に
ついては問題があることが分かる。比較材No.3、比較材
No.7、比較材No.8についてはアルミナの存在が押出性に
影響を与えていると考えられる。また比較材No.9につい
てはCuの存在が硬さを高く、伸びを小さくしていると
考えられる。
In contrast, Comparative Material No. 3, Comparative Material No. 7, Comparative Material No. 8 and Comparative Material No. 9 were all poor in manufacturability.
It can be seen that these have no problem for thick and long materials, but have problems for thin materials. Comparative material No.3, comparative material
For No. 7 and comparative material No. 8, it is considered that the presence of alumina affects the extrudability. Regarding Comparative Material No. 9, it is considered that the presence of Cu increases the hardness and reduces the elongation.

【0106】(第6評価試験:熱伝導性の評価)更に本
発明材について熱伝導率を測定して、熱伝導性を評価し
た。更に比較のために比較材について熱伝導率を測定し
た。表6に本評価試験に用いた本発明材及び比較材の組
成と熱伝導率を示す。
(Sixth Evaluation Test: Evaluation of Thermal Conductivity) Further, the thermal conductivity of the material of the present invention was measured to evaluate the thermal conductivity. For comparison, the thermal conductivity of the comparative material was measured. Table 6 shows the composition and thermal conductivity of the material of the present invention and the comparative material used in this evaluation test.

【0107】本評価試験で用いられた本発明材及び比較
材の製造方法及び形状は耐摩耗性及び相手材攻撃性の評
価試験の場合と同一である。従って製造方法及び形状の
説明は、第1評価試験における説明に譲る。
The manufacturing method and shape of the material of the present invention and the comparative material used in this evaluation test are the same as those in the evaluation test of wear resistance and opponent material attack. Therefore, the description of the manufacturing method and the shape will be omitted in the description of the first evaluation test.

【0108】[0108]

【表6】 [Table 6]

【0109】このように本発明の粉末アルミニウム合金
製摺動部材においては、発明材No.7及び発明材No.9の組
成を有する場合に優れた熱伝導性を有することというこ
とができる。
As described above, it can be said that the sliding member made of the powder aluminum alloy of the present invention has excellent thermal conductivity when it has the compositions of Inventive Material No. 7 and Inventive Material No. 9.

【0110】[0110]

【発明の効果】本発明の粉末アルミニウム合金製摺動部
材は、優れた耐摩耗性を有することができ、かつ相手材
の摩耗量を少なくすることできる。更には優れた製造性
を有することができる。
The sliding member made of the powder aluminum alloy of the present invention can have excellent wear resistance and can reduce the amount of wear of the mating material. Furthermore, it can have excellent manufacturability.

【0111】また本発明の粉末アルミニウム合金製摺動
部材において、その摺動面にウォータブラストによって
相手材と摺動する摺動面に多数の凹部を形成することに
よって、スカッフ防止性を向上させることができる。
In the sliding member made of the powdered aluminum alloy of the present invention, the scuff prevention property is improved by forming a large number of recesses on the sliding surface which slides with the mating material by water tablast. You can

【0112】更に本発明の粉末アルミニウム合金製摺動
部材において、Ni及びSnのいずれかをコーティング
した微粒子を用いたショットブラストによって相手材と
摺動する摺動面に多数の凹部を形成すると共にNi被膜
及びSn被膜のいずれかを形成することによって、スカ
ッフ防止を向上させることができる。
Furthermore, in the powder aluminum alloy sliding member of the present invention, a large number of concave portions are formed on the sliding surface which slides on the mating material by shot blasting using fine particles coated with either Ni or Sn and Ni. By forming either the coating or the Sn coating, the scuff prevention can be improved.

【0113】本発明のシリンダとピストンリングの組み
合わせは優れたスカッフ防止性を有することができる。
The combination of the cylinder and the piston ring of the present invention can have excellent anti-scuffing property.

【図面の簡単な説明】[Brief description of drawings]

【図1】 第2評価試験の概要を示す図である。FIG. 1 is a diagram showing an outline of a second evaluation test.

【図2】 第3評価試験、第4評価試験の概要を示す図
である。
FIG. 2 is a diagram showing an outline of a third evaluation test and a fourth evaluation test.

【符号の説明】[Explanation of symbols]

A:下側試片 B:上側試片 C:下側試片 D:上側試片 A: Lower sample B: Upper sample C: Lower sample D: Upper sample

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) C23C 28/00 C23C 28/00 C F02F 1/00 F02F 1/00 D G 5/00 5/00 F Fターム(参考) 3G024 AA22 FA00 FA06 FA09 GA00 GA08 GA18 HA07 HA10 4K018 AA16 AB01 BA08 BA13 BA20 BB04 FA01 FA05 FA24 FA25 KA02 KA08 KA09 4K044 AA06 AB03 AB04 AB10 BA06 BA10 BA18 BB02 BB03 BC01 CA12 CA13 CA14 CA23 CA51─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI theme code (reference) C23C 28/00 C23C 28/00 C F02F 1/00 F02F 1/00 D G 5/00 5/00 5 F F Term (reference) 3G024 AA22 FA00 FA06 FA09 GA00 GA08 GA18 HA07 HA10 4K018 AA16 AB01 BA08 BA13 BA20 BB04 FA01 FA05 FA24 FA25 KA02 KA08 KA09 4K044 AA06 AB03 AB04 AB10 BA06 BA10 BA18 CB02 BB03 BC01 CA12 CA13 CA14 CA23 CA23 CA14 CA23

Claims (11)

【特許請求の範囲】[Claims] 【請求項1】 粉末アルミニウム合金によって形成され
たマトリックスと該マトリックス中に分散された硬質粒
子とを含む粉末アルミニウム合金製摺動部材において、 前記粉末アルミニウム合金は、前記粉末アルミニウム合
金の質量を100%として12〜30%のケイ素と1〜
6%のマンガンと1〜6%のマグネシウムと残部を実質
的にアルミニウム及び不可避的不純物とからなり、かつ
前記ケイ素の質量百分率の数値と前記マンガンの質量百
分率の数値とを掛け合わせた数値が30以上となる組成
であり、 前記硬質粒子は、鉄系硬質粒子及びアルミナよりも硬さ
が低いセラミックス粒子の1種以上であることを特徴と
する粉末アルミニウム合金製摺動部材。
1. A sliding member made of a powder aluminum alloy, comprising a matrix formed of the powder aluminum alloy and hard particles dispersed in the matrix, wherein the powder aluminum alloy has a mass of the powder aluminum alloy of 100%. As 12 to 30% of silicon and 1 to
6% manganese, 1-6% magnesium and the balance substantially aluminum and inevitable impurities, and the numerical value obtained by multiplying the numerical value of the mass percentage of the silicon by the numerical value of the mass percentage of the manganese is 30. The composition is as described above, and the hard particles are one or more of iron-based hard particles and ceramic particles having a hardness lower than that of alumina, and a sliding member made of a powder aluminum alloy.
【請求項2】 前記硬質粒子が前記鉄系硬質粒子のみか
らなるときは、前記硬質粒子の含有量は、前記粉末アル
ミニウム合金製摺動部材の質量を100%として、3〜
30%である請求項1記載の粉末アルミニウム合金製摺
動部材。
2. When the hard particles are composed of only the iron-based hard particles, the content of the hard particles is 3 to 10 with the mass of the sliding member made of the powder aluminum alloy being 100%.
The sliding member made of the powder aluminum alloy according to claim 1, which has a content of 30%.
【請求項3】 前記硬質粒子が、前記セラミックス粒子
のみからなるときは、前記硬質粒子の含有量は、前記粉
末アルミニウム合金製摺動部材の質量を100%とし
て、1〜30%である請求項1記載の粉末アルミニウム
合金製摺動部材。
3. When the hard particles are composed of only the ceramic particles, the content of the hard particles is 1 to 30% with the mass of the powder aluminum alloy sliding member being 100%. The sliding member made of the powder aluminum alloy according to 1.
【請求項4】 前記硬質粒子が、前記鉄系硬質粒子と前
記セラミックス粒子とからなるときは、前記硬質粒子の
含有量は、前記粉末アルミニウム合金製摺動部材の質量
を100%として、1〜30%である請求項1記載の粉
末アルミニウム合金製摺動部材。
4. When the hard particles are composed of the iron-based hard particles and the ceramic particles, the content of the hard particles is 1 to 100% by mass of the sliding member made of the powder aluminum alloy. The sliding member made of the powder aluminum alloy according to claim 1, which has a content of 30%.
【請求項5】 前記硬質粒子は、MHVが2000未満
である請求項1、2、3又は4記載の粉末アルミニウム
摺動部材。
5. The powdered aluminum sliding member according to claim 1, 2, 3 or 4, wherein the hard particles have an MHV of less than 2000.
【請求項6】 前記鉄系硬質粒子は、高〜低炭素鉄クロ
ム合金粒子である請求項1、2又は4記載の粉末アルミ
ニウム合金製摺動部材。
6. The powder aluminum alloy sliding member according to claim 1, wherein the iron-based hard particles are high to low carbon iron chromium alloy particles.
【請求項7】 前記セラミックス粒子は、ムライト粒子
である請求項1、3又は4記載の粉末アルミニウム合金
製摺動部材。
7. The sliding member made of a powder aluminum alloy according to claim 1, wherein the ceramic particles are mullite particles.
【請求項8】 前記硬質粒子は、平均粒径が2〜20μ
mである請求項1、2、3、4、5、6又は7記載の粉
末アルミニウム合金製摺動部材。
8. The average particle diameter of the hard particles is 2 to 20 μm.
The sliding member made of a powdered aluminum alloy according to claim 1, wherein the sliding member is m.
【請求項9】 ウォータブラストによって相手材と摺動
する摺動面に多数の凹部が形成された請求項1、2、
3、4、5、6、7又は8記載の粉末アルミニウム合金
製摺動部材。
9. A plurality of recesses are formed on a sliding surface that slides on a mating member by water tablast.
A sliding member made of powder aluminum alloy according to 3, 4, 5, 6, 7 or 8.
【請求項10】 Ni及びSnのいずれかをコーティン
グした微粒子を用いたショットブラストによって相手材
と摺動する摺動面に多数の凹部が形成されると共にNi
被膜及びSn被膜のいずれかが形成された請求項1、
2、3、4、5、6、7又は8記載の粉末アルミニウム
合金製摺動部材。
10. A large number of concave portions are formed on a sliding surface which slides on a mating material by shot blasting using fine particles coated with either Ni or Sn, and Ni.
A coating film or a Sn coating film is formed,
A sliding member made of powder aluminum alloy according to 2, 3, 4, 5, 6, 7 or 8.
【請求項11】 シリンダとピストンリングの組み合わ
せにおいて、 前記シリンダの内周摺動面は前記請求項1、2、3、
4、5、6、7、8、9及び10のいずれかに記載され
た粉末アルミニウム合金製摺動部材によって構成され、 前記シリンダの前記内周摺動面と摺動する前記ピストン
リングの外周摺動面はDLC被膜、WC/C被膜及び樹
脂被膜のいずれかが形成されていることを特徴とするシ
リンダとピストンリングの組み合わせ。
11. A combination of a cylinder and a piston ring, wherein the inner peripheral sliding surface of the cylinder has the above-mentioned 1, 2, 3,
An outer peripheral slide of the piston ring, which is constituted by the powder aluminum alloy sliding member described in any one of 4, 5, 6, 7, 8, 9, and 10, and slides on the inner peripheral sliding surface of the cylinder. A combination of a cylinder and a piston ring, characterized in that the moving surface is formed with any one of a DLC film, a WC / C film and a resin film.
JP2001202216A 2001-07-03 2001-07-03 Sliding member made from powder aluminum alloy, and combination of cylinder and piston ring Pending JP2003013163A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001202216A JP2003013163A (en) 2001-07-03 2001-07-03 Sliding member made from powder aluminum alloy, and combination of cylinder and piston ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001202216A JP2003013163A (en) 2001-07-03 2001-07-03 Sliding member made from powder aluminum alloy, and combination of cylinder and piston ring

Publications (1)

Publication Number Publication Date
JP2003013163A true JP2003013163A (en) 2003-01-15

Family

ID=19039060

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Country Status (1)

Country Link
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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EP1612198A1 (en) * 2003-03-20 2006-01-04 Yazaki Corporation Ceramics hollow particles, composite material containing ceramics hollow particles and sliding member
US8206035B2 (en) 2003-08-06 2012-06-26 Nissan Motor Co., Ltd. Low-friction sliding mechanism, low-friction agent composition and method of friction reduction
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