JPH0841607A - Heat resistant and wear resistant sintered stainless steel - Google Patents
Heat resistant and wear resistant sintered stainless steelInfo
- Publication number
- JPH0841607A JPH0841607A JP18230694A JP18230694A JPH0841607A JP H0841607 A JPH0841607 A JP H0841607A JP 18230694 A JP18230694 A JP 18230694A JP 18230694 A JP18230694 A JP 18230694A JP H0841607 A JPH0841607 A JP H0841607A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- phase
- resistant
- copper
- wear
- 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.)
- Granted
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐熱性、耐摩耗性等に
優れた焼結ステンレス鋼に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sintered stainless steel having excellent heat resistance and wear resistance.
【０００２】[0002]
【従来技術とその課題】軸受材等のように高温酸化雰囲
気下で耐摩耗性が要求される材料は、従来よりＳＵＨ３
等の耐熱鋼、Ｃ６１９１等の銅合金などによって作製さ
れている。2. Description of the Related Art Materials such as bearing materials which are required to have wear resistance in a high temperature oxidizing atmosphere have been hitherto provided with SUH3.
It is made of heat-resistant steel such as C6191 and copper alloy such as C6191.
【０００３】しかしながら、耐熱鋼は、耐熱性及び耐摩
耗性に優れているものの、相手材を攻撃するため、相手
材の消耗を招くという問題がある。また、銅合金は、相
手材とのなじみが良く摺動特性に優れる反面、高温での
強度低下が顕著でその変形・摩耗が激しい。However, although heat-resistant steel is excellent in heat resistance and wear resistance, it has a problem that it causes wear of the mating material because it attacks the mating material. Further, the copper alloy has good compatibility with the mating material and is excellent in sliding characteristics, but on the other hand, the strength is remarkably reduced at high temperatures and its deformation and wear are severe.
【０００４】[0004]
【発明が解決しようとする課題】従って、本発明は、低
攻撃性で、高温での強度低下が小さく、耐摩耗性・耐酸
化性に優れた焼結材料を提供することを主な目的とす
る。SUMMARY OF THE INVENTION Accordingly, the main object of the present invention is to provide a sintered material having low attack property, small decrease in strength at high temperature, and excellent wear resistance and oxidation resistance. To do.
【０００５】[0005]
【課題を解決するための手段】本発明者は、上記従来技
術の問題に鑑みて鋭意研究を重ねた結果、焼結ステンレ
ス鋼において特定の二相を混在させた焼結体に銅又は銅
合金を含浸させることによって、高温での耐摩耗性、耐
酸化性等に優れた材料が得られることを見出し、本発明
を完成するに至った。DISCLOSURE OF THE INVENTION The inventors of the present invention have conducted extensive studies in view of the above problems of the prior art, and as a result, in a sintered body in which specific two phases are mixed in sintered stainless steel, copper or copper alloy is used. It has been found that a material excellent in wear resistance at high temperature, oxidation resistance, etc. can be obtained by impregnating with, and the present invention has been completed.
【０００６】即ち、本発明は、マルテンサイト相２０〜
５０体積％及び残部フェライト相からなる焼結ステンレ
ス鋼に銅又は銅合金が含浸されていることを特徴とする
耐熱・耐摩耗性焼結ステンレス鋼に係るものである。That is, according to the present invention, the martensite phase 20 to
The present invention relates to a heat-resistant and wear-resistant sintered stainless steel, which is obtained by impregnating a sintered stainless steel consisting of 50% by volume and the balance ferrite phase with copper or a copper alloy.
【０００７】以下、本発明について詳細に説明する。The present invention will be described in detail below.
【０００８】本発明の耐熱・耐摩耗性ステンレス鋼は、
マルテンサイト相２０〜５０体積％及び残部フェライト
相からなる焼結ステンレス鋼に銅又は銅合金が含浸され
ていることに特徴を有する。上記マルテンサイト相が２
０体積％未満の場合には、耐摩耗性が低下するので好ま
しくない。一方、５０体積％を超える場合には、耐熱
性、耐酸化性等が低下するので好ましくない。なお、本
発明の焼結ステンレス鋼においては、上記以外の相、例
えばオーステナイト相は１０体積％程度までであれば混
在していても差支えない。The heat-resistant and wear-resistant stainless steel of the present invention is
It is characterized in that sintered stainless steel consisting of 20 to 50% by volume of martensite phase and the balance ferrite phase is impregnated with copper or copper alloy. The martensite phase is 2
If it is less than 0% by volume, abrasion resistance is lowered, which is not preferable. On the other hand, when it exceeds 50% by volume, heat resistance, oxidation resistance and the like are deteriorated, which is not preferable. In the sintered stainless steel of the present invention, phases other than the above, for example, austenite phase may be mixed up to about 10% by volume.
【０００９】上記マルテンサイト相は、当該相中にＣｒ
を１０〜１５重量％含むことが望ましい。Ｃｒの存在に
よって焼結ステンレス鋼中におけるマルテンサイト相の
維持・安定化を図ることができる。The above martensite phase contains Cr in the phase.
It is desirable to contain 10 to 15% by weight. The presence of Cr makes it possible to maintain and stabilize the martensite phase in the sintered stainless steel.
【００１０】本発明では、上記マルテンサイト相にＭ
ｏ、Ｓｉ及びＮｉの少なくとも１種を含有させることに
より、焼結体の耐熱性等を向上させることができる。但
し、当該相中におけるこれらの添加量が合計５重量％を
上回るとオーステナイト相が形成されたり、炭化物の粗
大化又は液相の生成を招くので好ましくない。なお、添
加量の下限は、添加する元素の種類、マルテンサイト相
の占める割合（体積％）等により適宜設定すれば良い。In the present invention, M is added to the martensite phase.
By including at least one of o, Si and Ni, the heat resistance and the like of the sintered body can be improved. However, if the total amount of these added in the phase exceeds 5% by weight, an austenite phase is formed, coarsening of carbides or formation of a liquid phase is caused, which is not preferable. The lower limit of the amount of addition may be appropriately set depending on the type of element to be added, the ratio (volume%) of the martensite phase, and the like.
【００１１】一方、上記フェライト相は、当該相中にＣ
ｒを１６〜３０重量％含むことが望ましい。Ｃｒの存在
によって焼結ステンレス鋼中におけるフェライト相の維
持・安定化を図ることができる。On the other hand, the ferrite phase has a C content in the phase.
It is desirable to contain 16 to 30% by weight of r. The presence of Cr makes it possible to maintain and stabilize the ferrite phase in the sintered stainless steel.
【００１２】本発明では、上記マルテンサイト相の場合
と同様に、フェライト相にＭｏ、Ｓｉ及びＮｉの少なく
とも１種を含有させることにより、焼結体の耐熱性を向
上させることができる。但し、当該相中におけるこれら
の添加量が合計５重量％を上回るとオーステナイト相が
形成されたり、炭化物の粗大化又は液相の生成を招くの
で好ましくない。なお、添加量の下限は、添加する元素
の種類、フェライト相の占める割合（体積％）等により
適宜設定すれば良い。In the present invention, as in the case of the martensite phase, the heat resistance of the sintered body can be improved by incorporating at least one of Mo, Si and Ni in the ferrite phase. However, if the total amount of these added in the phase exceeds 5% by weight, an austenite phase is formed, coarsening of carbides or formation of a liquid phase is caused, which is not preferable. The lower limit of the addition amount may be appropriately set depending on the type of the element to be added, the proportion (volume%) occupied by the ferrite phase, and the like.
【００１３】さらに、本発明では、炭素を添加すること
によって、微細炭化物を形成させることにより耐摩耗性
の向上を図ることができる。但し、炭素の含有量が銅又
は銅合金を溶浸する前の焼結体（基材）中５重量％を上
回ると、オーステナイト相が形成されたり、炭化物の粗
大化又は液相の生成を招くので好ましくない。なお、含
有量の下限は、マルテンサイト相とフェライト相の比
率、製品の用途等により適宜設定すれば良い。Further, in the present invention, by adding carbon, fine carbides are formed to improve wear resistance. However, if the carbon content exceeds 5% by weight in the sintered body (base material) before infiltrating copper or copper alloy, an austenite phase is formed, carbides are coarsened, or liquid phase is generated. It is not preferable. The lower limit of the content may be appropriately set depending on the ratio of the martensite phase to the ferrite phase, the application of the product, and the like.
【００１４】焼結ステンレス鋼に含浸している銅又は銅
合金（溶浸材）は、耐食性、相手材とのなじみ性等を向
上させることができるものであれば特にその種類は制限
されない。このような特性をもつものとしては、例え
ば、純度９９％以上の銅、或いは合金成分としてＰｂ、
Ｚｎ、Ｓｎ、Ａｌ、Ｎｉ、Ｍｎ、Ｓｉ等を含む銅合金が
採用でき、これらは単独又は２種以上を用いることが可
能である。なお、銅合金を使用する場合において摺動材
料を目的として製造する場合は、上記合金成分が３５重
量％を超えると相手材とのなじみ性を低下させるおそれ
があるので、通常は３５重量％以下の範囲で用いること
が好ましい。本発明の焼結ステンレス鋼においては、上
記含浸材はその気孔部又はその周辺部、凹部等に均一に
存在している。The type of copper or copper alloy (infiltration material) impregnated into the sintered stainless steel is not particularly limited as long as it can improve the corrosion resistance and the compatibility with the mating material. As the material having such characteristics, for example, copper having a purity of 99% or more, or Pb as an alloy component,
Copper alloys containing Zn, Sn, Al, Ni, Mn, Si and the like can be adopted, and these can be used alone or in combination of two or more. When using a copper alloy for the purpose of producing a sliding material, if the above alloy components exceed 35% by weight, the compatibility with the mating material may decrease, so it is usually 35% by weight or less. It is preferable to use in the range of. In the sintered stainless steel of the present invention, the impregnating material is evenly present in the pores, their peripheral portions, recesses and the like.
【００１５】上記の溶浸材の含浸量は、用いる溶浸材の
種類、製品の用途等により適宜定めることができ、通常
は上記基材に対し５〜２５重量％程度とすれば良い。５
重量％未満の場合には、相手材とのなじみが低下するお
それがあり、また２５重量％を超えると強度が低下する
おそれがあるので好ましくない。但し、本発明の効果に
悪影響を与えない限り上記範囲外となっても差支えな
い。The impregnated amount of the infiltrant mentioned above can be appropriately determined depending on the type of infiltrant used, the intended use of the product, etc., and is usually about 5 to 25% by weight with respect to the base material. 5
If it is less than 25% by weight, the compatibility with the mating material may decrease, and if it exceeds 25% by weight, the strength may decrease, which is not preferable. However, as long as it does not adversely affect the effect of the present invention, there is no problem even if it is out of the above range.
【００１６】本発明の焼結体は、例えば、以下のように
して製造することができる。フェライト相を形成する原
料粉末とマルテンサイト相を形成する原料粉末とを、マ
ルテンサイト相が最終的に２０〜５０体積％を占めるよ
うな割合で混合する。The sintered body of the present invention can be manufactured, for example, as follows. The raw material powder forming the ferrite phase and the raw material powder forming the martensite phase are mixed in such a ratio that the martensite phase finally occupies 20 to 50% by volume.
【００１７】これらの原料粉末は、焼結によって両各相
をそれぞれ形成し得る組成をもつものであれば、市販品
をそのまま用いることができる。例えば、フェライト相
を形成し得るものとしては市販のＳＵＳ４３０Ｌ相当の
ステンレス鋼粉末（Ｆｅ−17%Cr-0.5％Ｓｉ）、ＳＵＳ
４３４相当のステンレス鋼粉末（Ｆｅ−17％Ｃｒ-1％Ｍ
ｏ）等が挙げられる。また、マルテンサイト相を形成し
得るものとしては市販のＳＵＳ４１０Ｌ相当のステンレ
ス鋼粉（Ｆｅ−13％Ｃｒ-0.5％Ｓｉ）、ＳＵＳ４１０Ｊ
１相当のステンレス鋼粉（Ｆｅ−13％Ｃｒ-0.5％Ｍｏ）
等が挙げられる。また、これら原料粉末の粒径は、通常
１０〜１５０μｍ程度で用いることができるが、焼結反
応等に支障がない限り、この範囲を外れても良い。As these raw material powders, commercially available products can be used as they are as long as they have a composition capable of forming both phases by sintering. For example, commercially available SUS430L-equivalent stainless steel powder (Fe-17% Cr-0.5% Si) and SUS can be used to form the ferrite phase.
Equivalent to 434 stainless steel powder (Fe-17% Cr-1% M
o) etc. are mentioned. Further, as a material capable of forming a martensite phase, commercially available SUS410L equivalent stainless steel powder (Fe-13% Cr-0.5% Si), SUS410J
Stainless steel powder equivalent to 1 (Fe-13% Cr-0.5% Mo)
Etc. Further, the particle size of these raw material powders can be usually set to about 10 to 150 μm, but may be out of this range as long as it does not hinder the sintering reaction and the like.
【００１８】次いで、製品の用途等に応じて、この混合
粉末に所定量のＭｏ、Ｓｉ及びＮｉの少なくとも１種並
びにＣの粉末を添加する。これら添加粉末は、その一部
又は全部が前記の原料粉末中に予め含有されていても良
い。これらの粉末の粒径は、通常５〜４４μｍ程度で用
いることができるが、焼結反応に支障がない範囲内であ
ればこの範囲外となっても良い。またさらに、必要に応
じて、ステアリン酸亜鉛等の潤滑剤、その他Ｆｅ−Ｍｏ
化合物、Ｃｏ−Ｃｒ−Ｓｉ等の公知の各種添加剤を加え
ることもできる。Next, a predetermined amount of at least one of Mo, Si and Ni and C powder are added to this mixed powder depending on the application of the product. Part or all of these additive powders may be contained in the raw material powder in advance. The particle size of these powders can be usually about 5 to 44 μm, but may be out of this range as long as it does not hinder the sintering reaction. Furthermore, if necessary, a lubricant such as zinc stearate and other Fe-Mo
Various known additives such as compounds and Co—Cr—Si can also be added.
【００１９】得られた混合粉末を、常法に従って成形し
た後、焼結させる。成形方法は金型成形、静水圧成形等
の公知の方法が適用できる。成形圧力は、製品の用途等
に応じて適宜設定することができ、通常３〜８ton/cm2
程度とすれば良い。焼結は、通常アンモニア分解ガス等
の還元性雰囲気中で１０００〜１２５０℃程度の温度で
３０〜９０分程度で行うことができる。The mixed powder obtained is molded by a conventional method and then sintered. As the molding method, known methods such as mold molding and hydrostatic molding can be applied. The molding pressure can be appropriately set according to the application of the product, etc., and is usually 3 to 8 ton / cm 2
It should be about. Sintering can usually be performed in a reducing atmosphere such as an ammonia decomposition gas at a temperature of about 1000 to 1250 ° C. for about 30 to 90 minutes.
【００２０】続いて、得られた上記焼結体（基材）に溶
浸材を含浸させる。含浸は、例えば銅又は銅合金の焼結
体等を上記焼結体に積載等によって接触させ、通常アン
モニア分解ガス等の還元性雰囲気中で９００〜１２００
℃程度の温度で３０〜９０分間程度で行うことができ
る。また、含浸量の調整は、用いる銅又は銅合金の大き
さ、加熱時間等の変更により行うことができる。Subsequently, the infiltrant is impregnated in the obtained sintered body (base material). For impregnation, for example, a sintered body of copper or a copper alloy is brought into contact with the above sintered body by loading or the like, and usually 900 to 1200 in a reducing atmosphere such as ammonia decomposition gas.
It can be performed at a temperature of about C for about 30 to 90 minutes. The amount of impregnation can be adjusted by changing the size of the copper or copper alloy used, the heating time, or the like.
【００２１】[0021]
【発明の効果】本発明の焼結ステンレス鋼は、マルテン
サイト相とフェライト相の両者が特定の割合で混在する
焼結体に銅又は銅合金が含浸するという特異な構造を有
するので、マルテンサイト相とフェライト相両相のもつ
特性が互いに損れることなく発揮される。EFFECTS OF THE INVENTION The sintered stainless steel of the present invention has a peculiar structure in which a sintered body in which both the martensite phase and the ferrite phase are mixed in a specific ratio is impregnated with copper or a copper alloy. The characteristics possessed by both the phase and the ferrite phase are exhibited without impairing each other.
【００２２】即ち、耐摩耗性と耐熱性・耐酸化性の両特
性を兼ね備え、特に高温酸化雰囲気中で耐摩耗性等が要
求される材料に好適に用いることができる。しかも、摺
動材料として用いる場合には、相手材とのなじみが良好
である（相手材への攻撃性が低い）ので、従来のステン
レス鋼等と異なり相手材の消耗を抑制乃至防止すること
ができる。That is, it can be suitably used for a material which has both wear resistance and heat resistance / oxidation resistance, and is particularly required to have wear resistance in a high temperature oxidizing atmosphere. Moreover, when used as a sliding material, it is well compatible with the mating material (has a low attacking property against the mating material), so that it is possible to suppress or prevent wear of the mating material unlike conventional stainless steel and the like. it can.
【００２３】このように本発明焼結ステンレス鋼は、軸
受材、軸受機、バルブシート、パッキン等の摺動材料、
その他歯車、カム等の材料に特に有用である。As described above, the sintered stainless steel of the present invention is used for sliding materials such as bearing materials, bearing machines, valve seats and packings,
It is especially useful for materials such as gears and cams.
【００２４】[0024]
【実施例】以下に実施例および比較例を示し、本発明の
特徴とするところをより一層明確にする。なお、本実施
例における各特性の評価方法は以下の通りである。EXAMPLES Examples and comparative examples will be shown below to further clarify the features of the present invention. The evaluation method of each property in this example is as follows.
【００２５】(1) 酸化試験 大気中６００℃及び８００℃で１００時間加熱し、酸化
による重量変化を測定した。重量の増加が大きいほど耐
酸化性が低いことを示す。(1) Oxidation test The sample was heated at 600 ° C. and 800 ° C. in the atmosphere for 100 hours and the weight change due to oxidation was measured. The larger the weight increase, the lower the oxidation resistance.
【００２６】(2) 摩耗試験 大越式迅速摩耗試験機を使い、下記の条件で試験を行
い、その摩耗量を測定した。テストピースの摩耗量が少
ないほど耐摩耗性が良く、また相手材リングの摩耗量が
少ないほど相手材への攻撃性が低いことを示す。(2) Abrasion test Using an Ogoshi rapid abrasion tester, a test was conducted under the following conditions to measure the amount of abrasion. It is shown that the smaller the amount of wear of the test piece, the better the wear resistance, and the smaller the amount of wear of the mating material ring, the less the attacking property to the mating material.
【００２７】試験条件 摩耗速度 ４．８６ m/min 荷 重 ６．３ｋｇ 摩擦距離 １００ｍ 相手材リング ＳＵＳ３０４ 実施例１ 粒径１５０μｍ以下の市販のＳＵＳ４３０Ｌ相当のステ
ンレス鋼粉（Ｆｅ−17％Ｃｒ-0.5％Ｓｉ）６９重量部
に、粒径１５０μｍ以下の市販のＳＵＳ４１０Ｌ相当の
ステンレス鋼粉（Ｆｅ−13％Ｃｒ-0.5％Ｓｉ）を３０重
量部及び粒径４４μｍ以下の市販の黒鉛粉を１重量部加
えた。この原料に対し、金型成形の際の潤滑剤としてス
テアリン酸亜鉛０．８重量％を添加した。 Test conditions Abrasion rate 4.86 m / min Load 6.3 kg Friction distance 100 m Counterpart material ring SUS304 Example 1 Commercially available SUS430L equivalent stainless steel powder (Fe-17% Cr-0.5%) with a particle size of 150 μm or less Si) 69 parts by weight, 30 parts by weight of commercially available SUS410L equivalent stainless steel powder (Fe-13% Cr-0.5% Si) having a particle size of 150 μm or less and 1 part by weight of commercially available graphite powder having a particle size of 44 μm or less are added. It was To this raw material, 0.8% by weight of zinc stearate was added as a lubricant for molding.
【００２８】上記混合粉を６ton/cm2 の成形圧力で金型
成形し、成形体を作製した。次いで、この成形体を連続
焼成炉を使ってアンモニア分解ガス中１１５０℃で４５
分間焼結し、焼結体を得た。The above-mentioned mixed powder was die-molded at a molding pressure of 6 ton / cm 2 to prepare a molded body. Then, this molded body was subjected to 45 ° C. at 1150 ° C. in ammonia decomposition gas using a continuous firing furnace.
Sintering was performed for a minute to obtain a sintered body.
【００２９】一方、純度９９％以上の市販の銅粉を上記
焼結体の重量の１５重量％秤量し、これを３ton/cm2 の
圧力で成形し、これを溶浸材とした。On the other hand, a commercially available copper powder having a purity of 99% or more was weighed in an amount of 15% by weight based on the weight of the above sintered body, and this was molded at a pressure of 3 ton / cm 2 to obtain an infiltration material.
【００３０】次に、この溶浸材を上記焼結体の上に載
せ、連続焼成炉を使ってアンモニア分解ガス中１１００
℃で４５分間焼結し、気孔内に銅が含浸された焼結ステ
ンレス鋼を得た。得られた材料につき以下の各種の評価
を行った。その結果を表１に示す。Next, this infiltrant is placed on the above-mentioned sintered body, and the continuous incinerator is used for 1100 in ammonia decomposition gas.
Sintering at 45 ° C. for 45 minutes gave a sintered stainless steel in which the pores were impregnated with copper. The following various evaluations were performed on the obtained material. The results are shown in Table 1.
【００３１】実施例２〜５ 基材、含浸材の種類、組成割合を表１のようにして、実
施例１と同様に焼結ステンレス鋼を製造した。得られた
試料Ｎｏ．２〜５につき実施例１と同様の評価を行っ
た。その結果を表１に示す。Examples 2 to 5 Sintered stainless steel was produced in the same manner as in Example 1 except that the types of base materials, impregnating materials, and composition ratios were as shown in Table 1. The obtained sample No. For 2 to 5, the same evaluation as in Example 1 was performed. The results are shown in Table 1.
【００３２】比較例１〜３ 基材の組成が本発明の範囲外の焼結体を作製した。Comparative Examples 1 to 3 Sintered bodies having a base material composition outside the range of the present invention were prepared.
【００３３】表１に示す原材料を用い、実施例１と同様
にして焼結し、焼結体を得た。さらに、焼結体の上に載
せ、連続焼成炉を使って実施例１と同様にして気孔内に
銅が含浸された焼結ステンレス鋼を得た。得られた材料
につき実施例１と同様の試験を行った。その結果を表１
に示す。Using the raw materials shown in Table 1, sintering was performed in the same manner as in Example 1 to obtain a sintered body. Further, the sintered body was placed on a sintered body and a continuous firing furnace was used to obtain a sintered stainless steel in which pores were impregnated with copper in the same manner as in Example 1. The same test as in Example 1 was performed on the obtained material. The results are shown in Table 1.
Shown in
【００３４】比較例４〜７ 銅又は銅合金を含浸しない焼結体を作製した。Comparative Examples 4 to 7 Sintered bodies which were not impregnated with copper or copper alloy were prepared.
【００３５】表１に示す原材料を用い、銅を含浸させな
い以外は、実施例１と同様にして焼結体を作製した。得
られた材料につき実施例１と同様の試験を行った。その
結果を表１に示す。Sintered bodies were produced in the same manner as in Example 1 except that the raw materials shown in Table 1 were used and copper was not impregnated. The same test as in Example 1 was performed on the obtained material. The results are shown in Table 1.
【００３６】なお、表１には、比較のため、ＳＵＨ３溶
製材を用いて実施例１と同様の試験を行った結果を比較
例７として併記する。For comparison, Table 1 also shows, as Comparative Example 7, the result of the same test as in Example 1 using SUH3 ingot.
【００３７】[0037]
【表１】 [Table 1]
【００３８】表１から明らかなように、比較例１及び２
は、マルテンサイト相の割合が少ないため、耐酸化性は
良好であるものの耐摩耗性に劣る。一方、比較例３は、
マルテンサイト相のみからなるため、耐摩耗性が良い反
面、耐酸化性に劣ることがわかる。また、銅が溶浸され
ていない比較例５〜７は耐酸化性が特に劣っている。こ
れに対し、本発明の焼結体（試料Ｎｏ．１〜５）は、耐
摩耗性、耐酸化性に優れており、しかも相手材への攻撃
性も低く、特に摺動材料としてバランスのとれた特性を
示すことがわかる。As is clear from Table 1, Comparative Examples 1 and 2
Has a low proportion of martensite phase, and therefore has good oxidation resistance but poor wear resistance. On the other hand, Comparative Example 3
It can be seen that since it consists of the martensite phase only, it has good wear resistance but inferior oxidation resistance. Further, Comparative Examples 5 to 7 in which copper is not infiltrated are particularly inferior in oxidation resistance. On the other hand, the sintered bodies of the present invention (Sample Nos. 1 to 5) are excellent in wear resistance and oxidation resistance, and have low attack on the mating material, and are particularly well balanced as a sliding material. It can be seen that it exhibits excellent characteristics.
Claims (8)
部フェライト相からなる焼結ステンレス鋼に銅又は銅合
金が含浸されていることを特徴とする耐熱・耐摩耗性焼
結ステンレス鋼。1. A heat-resistant and wear-resistant sintered stainless steel comprising a sintered stainless steel consisting of 20 to 50% by volume of a martensite phase and the balance ferrite phase impregnated with copper or a copper alloy.
０〜１５重量％含む請求項１記載の耐熱・耐摩耗性焼結
ステンレス鋼。2. The martensite phase contains 1% of Cr in the phase.
The heat-resistant and wear-resistant sintered stainless steel according to claim 1, containing 0 to 15% by weight.
ｉ及びＮｉの少なくとも１種を合計５重量％を超えない
範囲で含む請求項２記載の耐熱・耐摩耗性焼結ステンレ
ス鋼。3. The martensite phase contains Mo, S in the phase.
The heat-resistant and wear-resistant sintered stainless steel according to claim 2, which contains at least one of i and Ni in a range not exceeding 5% by weight in total.
３０重量％含む請求項１記載の耐熱・耐摩耗性焼結ステ
ンレス鋼。4. The ferrite phase contains 16 to 16% of Cr in the phase.
The heat-resistant and wear-resistant sintered stainless steel according to claim 1, containing 30% by weight.
ｉ及びＮｉの少なくとも１種を合計５重量％を超えない
範囲で含む請求項４記載の耐熱・耐摩耗性焼結ステンレ
ス鋼。5. The martensite phase contains Mo and S in the phase.
The heat-resistant and wear-resistant sintered stainless steel according to claim 4, which contains at least one of i and Ni in a range not exceeding 5% by weight in total.
中に、炭素を基材中５重量％を超えない範囲で含む請求
項１記載の耐熱・耐摩耗性焼結ステンレス鋼。6. The heat-resistant and wear-resistant sintered stainless steel according to claim 1, wherein carbon is contained in the ferrite phase and / or the martensite phase in an amount not exceeding 5% by weight in the base material.
ｎ、Ａｌ及びＮｉの少なくとも１種を５〜３５重量％含
む請求項１記載の耐熱・耐摩耗性焼結ステンレス鋼。7. A copper alloy containing Pb, Zn and S as alloy components.
The heat-resistant and wear-resistant sintered stainless steel according to claim 1, which contains 5-35 wt% of at least one of n, Al and Ni.
量％含浸されている請求項１記載の耐熱・耐摩耗性焼結
ステンレス鋼。8. The heat-resistant and wear-resistant sintered stainless steel according to claim 1, wherein the base material is impregnated with 5 to 25% by weight of copper or a copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18230694A JP3682556B2 (en) | 1994-08-03 | 1994-08-03 | Heat and wear resistant sintered stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18230694A JP3682556B2 (en) | 1994-08-03 | 1994-08-03 | Heat and wear resistant sintered stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0841607A true JPH0841607A (en) | 1996-02-13 |
| JP3682556B2 JP3682556B2 (en) | 2005-08-10 |
Family
ID=16115991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18230694A Expired - Fee Related JP3682556B2 (en) | 1994-08-03 | 1994-08-03 | Heat and wear resistant sintered stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3682556B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11117716A (en) * | 1997-10-13 | 1999-04-27 | Hino Motors Ltd | Cam for engine |
| WO2010106909A1 (en) * | 2009-03-19 | 2010-09-23 | Ntn株式会社 | Sintered metallic bearing and fluid dynamic bearing device equipped with the bearing |
| JP2010223246A (en) * | 2009-03-19 | 2010-10-07 | Ntn Corp | Sintered metal bearing |
| JP2011033156A (en) * | 2009-08-04 | 2011-02-17 | Ntn Corp | Sintered metal bearing and method of manufacturing the same |
| JP2012094692A (en) * | 2010-10-27 | 2012-05-17 | Daihatsu Motor Co Ltd | Composite soft magnetic material |
| WO2014041976A1 (en) * | 2012-09-12 | 2014-03-20 | Ntn株式会社 | Machine component made of ferrous sintered metal |
-
1994
- 1994-08-03 JP JP18230694A patent/JP3682556B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11117716A (en) * | 1997-10-13 | 1999-04-27 | Hino Motors Ltd | Cam for engine |
| WO2010106909A1 (en) * | 2009-03-19 | 2010-09-23 | Ntn株式会社 | Sintered metallic bearing and fluid dynamic bearing device equipped with the bearing |
| JP2010223246A (en) * | 2009-03-19 | 2010-10-07 | Ntn Corp | Sintered metal bearing |
| US8992658B2 (en) | 2009-03-19 | 2015-03-31 | Ntn Corporation | Sintered metallic bearing and fluid dynamic bearing device equipped with the bearing |
| JP2011033156A (en) * | 2009-08-04 | 2011-02-17 | Ntn Corp | Sintered metal bearing and method of manufacturing the same |
| JP2012094692A (en) * | 2010-10-27 | 2012-05-17 | Daihatsu Motor Co Ltd | Composite soft magnetic material |
| WO2014041976A1 (en) * | 2012-09-12 | 2014-03-20 | Ntn株式会社 | Machine component made of ferrous sintered metal |
| JP2014055322A (en) * | 2012-09-12 | 2014-03-27 | Ntn Corp | Ferrous sintered metallic machine component |
| CN104583443A (en) * | 2012-09-12 | 2015-04-29 | Ntn株式会社 | Machine component made of ferrous sintered metal |
| US9970086B2 (en) | 2012-09-12 | 2018-05-15 | Ntn Corporation | Machine component made of ferrous sintered metal |
| US11035027B2 (en) | 2012-09-12 | 2021-06-15 | Ntn Corporation | Machine component made of ferrous sintered metal |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3682556B2 (en) | 2005-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1337748C (en) | Sintered materials | |
| US6139598A (en) | Powdered metal valve seat insert | |
| CA1278200C (en) | Wear-resistant, sintered iron alloy and process for producing the same | |
| EP2778243B1 (en) | Iron based sintered sliding member and method for producing the same | |
| WO1998024941A1 (en) | Iron-based powder | |
| KR100189233B1 (en) | Iron-based powder, component made thereof, and method of making the component | |
| US4274876A (en) | Sintered hard metals having high wear resistance | |
| JPH1171651A (en) | Ferrous sintered alloy for valve seat | |
| KR100263283B1 (en) | Iron-based powder containing chromium, molybdenium and manganese | |
| US5545249A (en) | Sintered bearing alloy for high-temperature application and method of manufacturing an article of the alloy | |
| JPH0841607A (en) | Heat resistant and wear resistant sintered stainless steel | |
| US4696696A (en) | Sintered alloy having improved wear resistance property | |
| US3793691A (en) | Thermal and abrasion resistant sintered alloy | |
| JPS6117895B2 (en) | ||
| JP2001158934A (en) | Method for producing wear resistant ferrous sintered alloy | |
| JPH0742558B2 (en) | Abrasion resistant iron-based sintered alloy and its manufacturing method | |
| JP2677813B2 (en) | High temperature wear resistant iron-based sintered alloy | |
| JP2643743B2 (en) | High strength valve seat made of lead impregnated iron-based sintered alloy for internal combustion engine | |
| JP2683444B2 (en) | Sintered alloy for valve mechanism of internal combustion engine | |
| JPH0114985B2 (en) | ||
| JP3077274B2 (en) | Valve seat made of lead impregnated Fe-based sintered alloy with excellent wear resistance | |
| JPS62133043A (en) | Fe sintered material impregnated with cu | |
| JPS5839223B2 (en) | Sintered sliding parts | |
| JPH0116294B2 (en) | ||
| JPS5852555B2 (en) | Sintered sliding parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Effective date: 20040922 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A521 | Written amendment |
Effective date: 20041122 Free format text: JAPANESE INTERMEDIATE CODE: A523 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Effective date: 20050427 Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Effective date: 20050509 Free format text: JAPANESE INTERMEDIATE CODE: A61 |
|
| R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |