JP2000026195A - Coating film of component for injection molding of magnesium alloy - Google Patents
Coating film of component for injection molding of magnesium alloyInfo
- Publication number
- JP2000026195A JP2000026195A JP10192509A JP19250998A JP2000026195A JP 2000026195 A JP2000026195 A JP 2000026195A JP 10192509 A JP10192509 A JP 10192509A JP 19250998 A JP19250998 A JP 19250998A JP 2000026195 A JP2000026195 A JP 2000026195A
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- Japan
- Prior art keywords
- film
- examples
- magnesium alloy
- alloy
- carbon
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、マグネシウム（Ｍ
ｇ）合金を射出成型するための部品の被覆膜に関する。
射出成型の部品としては、溶融または半溶融したＭｇ合
金が直接接触する部品並びに凝固したＭｇ合金が直接接
触する金型、ノズル等も対象である。BACKGROUND OF THE INVENTION 1. Field of the Invention
g) Coatings for parts for injection molding alloys.
Injection-molded parts include parts that are in direct contact with a molten or semi-molten Mg alloy, as well as dies and nozzles that are in direct contact with a solidified Mg alloy.
【０００２】[0002]
【従来の技術】近年、自動車等輸送機器の軽量化への要
求、パソコンや電話等の各種電子機器の携帯化にともな
う部品の軽量化と電磁波シールド性能への要求等からＭ
ｇ合金が注目されており、そして、その成型法として射
出成型が見直されている。2. Description of the Related Art In recent years, demands for weight reduction of transportation equipment such as automobiles, and weight reduction of parts and electromagnetic shielding performance due to portability of various electronic equipments such as personal computers and telephones have been increasing.
Attention has been paid to g alloys, and injection molding is being reviewed as a molding method.
【０００３】Ｍｇ合金を射出成形する部品は一般に鋼系
材料が用いられている。部品のうち射出成型の金型にお
いては、成形されたＭｇ合金が金型内壁の表面に焼付く
場合があり、金型寿命を短くしており、Ｍｇ合金成形体
の歩留まりも悪くしている。[0003] In general, steel-based materials are used for injection molding parts of Mg alloys. Among the parts of the injection-molded mold, the formed Mg alloy may seize on the surface of the inner wall of the mold, shortening the life of the mold and deteriorating the yield of the Mg alloy molded body.
【０００４】現在はシリコーン系潤滑剤を金型内壁に塗
布して、Ｍｇ合金の焼付きを防止しているが、一回の成
形ごとに塗布する必要があり煩雑である。焼付きが起こ
らない場合でも、繰り返し使用すれば、金型寸法の精度
が保てなくなる。At present, a silicone-based lubricant is applied to the inner wall of a mold to prevent seizure of the Mg alloy. However, it is necessary to apply the lubricant every time molding is performed, which is complicated. Even when seizure does not occur, the accuracy of the mold dimensions cannot be maintained by repeated use.
【０００５】これは半溶融状態のＭｇ合金が化学的に非
常に活性で、金型を浸食したり、あるいは射出成型中
に、部分的に固化したＭｇ合金と接触することで、金型
の摩耗が生じて、金型寸法の精度が維持できないためで
ある。[0005] This is because the semi-molten Mg alloy is chemically very active and erodes the mold, or contacts the partially solidified Mg alloy during injection molding, causing wear of the mold. This is because the accuracy of the mold dimensions cannot be maintained.
【０００６】一方、粉末鍛造用の金型の壁面が、窒化処
理等の表面処理による膜を有することで、鍛造品の離形
性向上、金型内壁の耐摩耗性向上を図ることがなされて
いる。しかし、近年注目されているＭｇ合金の射出成形
用金型にこれらの技術を適用している例はない。On the other hand, since the wall surface of the mold for powder forging has a film formed by surface treatment such as nitriding treatment, the releasability of the forged product and the wear resistance of the inner wall of the mold are improved. I have. However, there is no example in which these techniques are applied to a mold for injection molding of a Mg alloy, which has attracted attention in recent years.
【０００７】その他の射出成形用部品であるノズル、シ
リンダ、スクリューなども、半溶融状態のＭｇ合金と接
触することになり、部品の浸食が問題となっている。[0007] Other injection molding parts such as nozzles, cylinders, screws and the like also come into contact with the Mg alloy in a semi-molten state, and erosion of the parts is a problem.
【０００８】また、Ｍｇ合金を半溶融状態とするために
は、ノズル、シリンダ、スクリュー等の射出成型の部品
を６００℃近くの高温状態に保持する必要があり、これ
ら部品の耐熱性も必要である。このため、鋼系材料の中
でも、高い耐熱性と耐食性を有する高合金系である熱間
金型鋼を用いた部品も用いられているが、同様にＭｇ合
金の焼付きを防止できず、部品の繰り返しの使用には耐
えない。In order to bring the Mg alloy into a semi-molten state, it is necessary to maintain injection-molded parts such as nozzles, cylinders, screws and the like at a high temperature of around 600 ° C., and these parts also need to have heat resistance. is there. For this reason, among steel-based materials, components using a hot die steel that is a high alloy system having high heat resistance and corrosion resistance are also used, but similarly, seizure of the Mg alloy cannot be prevented, and Does not withstand repeated use.
【０００９】[0009]
【発明が解決しようとする課題】従来、Ｍｇ合金の射出
成型時に用いられる金型等の部品は、その表面にＭｇ合
金が焼き付いたり、更には表面が摩耗して使用できない
という問題点があった。そのため多くの繰り返しの使用
による射出成型ができず、部品の交換がひんぱんに必要
となっていた。Conventionally, there has been a problem that parts such as a mold used in injection molding of a Mg alloy cannot be used because the Mg alloy is seized on the surface or the surface is worn. . As a result, injection molding cannot be performed due to repeated use, and replacement of parts has been frequently required.
【００１０】[0010]
【課題を解決するための手段】ダイヤモンド状炭素で構
成されたもの、チタン、アルミニウム、クロムまたはこ
れらの合金の少なくとも一つの窒化物で構成されている
もの、同じく炭化物あるいは、同じく炭窒化物で構成さ
れているマグネシウム合金射出成型用部品の被覆膜が有
用である。Means for Solving the Problems A material composed of diamond-like carbon, a material composed of at least one nitride of titanium, aluminum, chromium or an alloy thereof, also composed of carbide or carbonitride The coating film of the magnesium alloy injection molded part which has been used is useful.
【００１１】ダイヤモンド状炭素が少なくとも７０原子
％を有し、含有物がチタン、アルミニウム、クロムまた
はこれらの合金の少なくとも一つの金属であるもの、あ
るいは含有物がチタン、アルミニウム、クロムまたはこ
れらの合金の少なくとも一つの窒化物、同じく炭化物、
同じく炭窒化物であるマグネシウム合金射出成型用部品
の被覆膜も有用である。さらに、前記膜を少なくとも２
以上組み合わせた多層構造としたマグネシウム合金射出
成型用部品の被覆膜が有用である。[0011] The diamond-like carbon has at least 70 atomic% and the content is at least one metal of titanium, aluminum, chromium or alloys thereof, or the content is titanium, aluminum, chromium or alloys of these alloys. At least one nitride, also a carbide,
Also useful is a coating of magnesium alloy injection molded parts, which are also carbonitrides. Further, the membrane may have at least two
A coating film of a magnesium alloy injection molded part having a multilayer structure combined with the above is useful.
【００１２】[0012]
【発明の実施の形態】本発明であるダイヤモンド状炭素
よりなる膜は、ダイヤモンド構造を一部に有するアモル
ファス状の炭素あるいは水素化炭素で、アモルファスカ
ーボン（ａ−Ｃ）、ｉ−Ｃ（アイ・カーボン）、ＤＬＣ
（Ｄｉａｍｏｎｄ ｌｉｋｅ Ｃａｒｂｏｎ）などとも
称されている。BEST MODE FOR CARRYING OUT THE INVENTION The film made of diamond-like carbon according to the present invention is amorphous carbon or hydrogenated carbon partially having a diamond structure, and is composed of amorphous carbon (aC), iC (eye Carbon), DLC
(Diamond like Carbon).
【００１３】本発明の意図する上記ダイヤモンド状炭素
よりなる膜は、ヌープ硬度（荷重１５ｇｆ、３点平均）
が１０００から８０００のものである。硬度が１０００
未満であるとＭｇ合金を射出成形する際に、その部品へ
の焼き付き量が増加し、連続した成形ができなくなる。The film made of the diamond-like carbon intended by the present invention has a Knoop hardness (load of 15 gf, average of three points).
Are from 1,000 to 8,000. Hardness 1000
If the amount is less than the above, when the Mg alloy is injection-molded, the amount of seizure on the part increases, and continuous molding cannot be performed.
【００１４】一方、硬度が８０００を越すと、ダイヤモ
ンド状炭素よりなる膜の内部に高い圧縮応力が発生し
て、膜が自己破壊し、部品に膜が形成できない。なお、
イオンビーム蒸着（ＩＢＰ）法等の通常のダイヤモンド
状炭素を作成する方法で作成したもののヌープ硬度は、
１０００から８０００である。On the other hand, when the hardness exceeds 8000, a high compressive stress is generated inside the film made of diamond-like carbon, the film is self-destructed, and a film cannot be formed on a part. In addition,
The Knoop hardness of a sample formed by a method of forming a normal diamond-like carbon such as an ion beam deposition (IBP) method is as follows.
1000 to 8000.
【００１５】また、たとえば、ＴｉＮ、ＣｒＮが立方晶
でＡｌＮが六方晶であったり、Ｃｒの窒化物は、ＣｒＮ
とＣｒ2Ｎの両方からなっているが、立方晶と六方晶の
いずれも、またＣｒＮとＣｒ2Ｎのいずれも、Ｍｇ合金
の射出成型の部品の膜として同様の性質を示す。なお、
Ｔｉ、Ａｌ、Ｃｒまたはこれらの合金の少なくとも一つ
の炭化物で構成された膜は、Ｍｇ合金の射出成型の部品
の膜としては、焼付きのない良好な結果が得られる。Also, for example, TiN and CrN are cubic and AlN is hexagonal.
And Cr 2 N, both cubic and hexagonal, and both CrN and Cr 2 N exhibit similar properties as films for injection-molded parts of Mg alloys. In addition,
A film composed of at least one carbide of Ti, Al, Cr or an alloy thereof can provide a good result without seizure as a film of an injection-molded part of a Mg alloy.
【００１６】Ｔｉ、Ａｌ、Ｃｒまたはこれらの合金の少
なくとも一つの炭窒化物で構成された膜において、Ｔ
ｉ、Ａｌ、Ｃｒまたはこれらの合金の炭窒化物は、それ
らの窒化物と比較すると硬度が高くなるが、Ｍｇ合金の
射出成型の部品の膜として同様の性質を示す。すなわ
ち、Ｔｉ、Ａｌ、Ｃｒまたはこれらの合金の少なくとも
一つの炭窒化物で構成する膜では、その膜中の炭素
（Ｃ）と窒素（Ｎ）の比（原子数の比）に関係なく、Ｍ
ｇ合金の射出成型部品の膜としては、焼付きのない良好
な効果が得られる。In a film made of at least one carbonitride of Ti, Al, Cr or an alloy thereof,
Carbonitrides of i, Al, Cr or their alloys have higher hardness than their nitrides, but show similar properties as films for injection molded parts of Mg alloys. That is, in a film composed of at least one carbonitride of Ti, Al, Cr, or an alloy thereof, M is independent of the ratio of carbon (C) to nitrogen (N) in the film (ratio of the number of atoms).
A good effect without seizure can be obtained as a film of the g-alloy injection molded part.
【００１７】ダイヤモンド状炭素を原子％で少なくとも
７０％を有し、これにＴｉ、Ａｌ、Ｃｒの少なくとも一
つの金属を含有させた膜も効果がある。それらの構造
は、結晶質である場合もあるが、非晶質である場合もあ
る。Ｔｉ、Ａｌ、Ｃｒは、いずれも膜の内部応力を緩和
し、膜と部品との密着力の向上に寄与する。A film having at least 70% by atomic% of diamond-like carbon and containing at least one metal of Ti, Al and Cr is also effective. Their structures may be crystalline or amorphous. Ti, Al, and Cr all reduce the internal stress of the film and contribute to the improvement of the adhesion between the film and the component.
【００１８】ダイヤモンド状炭素がＴｉ、Ａｌ、Ｃｒま
たはこれらの合金の少なくとも一つの金属や、Ｔｉ、Ａ
ｌ、Ｃｒまたはこれらの合金の少なくとも一つの窒化
物、同じく炭化物、同じく炭窒化物を含有する場合、原
子％が７０％未満では、ダイヤモンド状炭素の特性が消
滅する。原子％で７０％以上では、部品へのＭｇ合金の
焼付き量が少なく、連続した成形が可能である。The diamond-like carbon may be at least one metal selected from the group consisting of Ti, Al, Cr and alloys thereof, and Ti, A
When at least one nitride, carbide or carbonitride of l, Cr or an alloy thereof is contained, if the atomic percentage is less than 70%, the properties of diamond-like carbon disappear. If the atomic percentage is 70% or more, the amount of seizure of the Mg alloy to the component is small, and continuous molding is possible.
【００１９】ダイヤモンド状炭素が少なくとも７０原子
％を有し、チタン、アルミニウム、クロムまたはこれら
の合金の少なくとも一つの金属である含有物が平均粒径
０．１ｎｍ以上である粒状領域に存在するようなマグネ
シウム合金射出成型用部品の被覆膜も有効と考えられ
る。The diamond-like carbon has at least 70 atomic%, and the inclusion of at least one metal of titanium, aluminum, chromium or an alloy thereof is present in a granular region having an average particle size of 0.1 nm or more. It is considered that a coating film of a part for magnesium alloy injection molding is also effective.
【００２０】上記の被覆膜を少なくとも２層組み合わせ
たものも、Ｍｇ合金の射出成型部品の膜として、焼付き
のない良好なもので、膜の層を多層とすることは製造上
においても格別困難なことではない。A combination of at least two layers of the above-mentioned coating films is also a good film without seizure as a film for an injection molded part made of a Mg alloy. Not difficult.
【００２１】本発明の膜を作製するに、気相合成法を用
いる。気相合成法としては、熱ＣＶＤ法、イオンビーム
蒸着（ＩＢＤ）法、真空アーク放電蒸着（ＶＡＤ）法、
プラズマＣＶＤ（Ｐ−ＣＶＤ）法、イオンプレーティン
グ（ＩＰ）法、スパッタ（ＳＰ）法を用いた。A gas phase synthesis method is used to produce the film of the present invention. As the gas phase synthesis method, there are a thermal CVD method, an ion beam evaporation (IBD) method, a vacuum arc discharge evaporation (VAD) method,
A plasma CVD (P-CVD) method, an ion plating (IP) method, and a sputtering (SP) method were used.
【００２２】熱ＣＶＤ法は、Ｔｉ、Ａｌ、Ｃｒの各塩化
物、あるいはアンモニア、窒素（Ｎ 2）、水素（Ｈ2）、
メタンなどを原料にして、これらを熱によって励起し、
反応させる。Ｐ−ＣＶＤ法は、ダイヤモンド状炭素を作
製するのに用い、炭化水素ガス、Ｈ2を原料にして、Ｒ
Ｆ（ｒａｄｉｏ−ｆｒｅｑｕｅｎｃｙ：高周波）やマイ
クロ波によって励起して反応させる。In the thermal CVD method, each chloride of Ti, Al and Cr is used.
Material, ammonia, nitrogen (N Two), Hydrogen (HTwo),
Using methane etc. as raw materials, these are excited by heat,
Let react. The P-CVD method produces diamond-like carbon.
Hydrocarbon gas, HTwoAnd R
F (radio-frequency: high frequency) and my
The reaction is excited by a black wave.
【００２３】ＩＢＤ法は、ダイヤモンド状炭素を作製す
るのに用いた。炭化水素ガスのイオンを部品に照射する
ことで、被覆を行う。ＶＡＤ法、ＩＰ法、ＳＰ法は、固
体を原料として、Ｎ2、炭化水素またはＡｒなどの雰囲
気下で蒸発させ、部品に析出させる。The IBD method was used to produce diamond-like carbon. The coating is performed by irradiating the components with hydrocarbon gas ions. In the VAD method, the IP method, and the SP method, a solid is used as a raw material and evaporated in an atmosphere of N 2 , hydrocarbon, Ar, or the like, and deposited on a component.
【００２４】以下に、本発明のさらに具体的な実施例を
示す。なお、膜を被覆した部品３は、すべてＳＫＤ６１
鋼材で、この鋼材は射出成型の部品の鋼材である。実施
例１〜１９を表１に示す。Hereinafter, more specific examples of the present invention will be described. The parts 3 coated with the film were all SKD61
In steel, this steel is the steel of injection molded parts. Examples 1 to 19 are shown in Table 1.
【００２５】すなわち、実施例１〜３はＴｉ、実施例
４、５はＡｌ、実施例６〜８はＣｒの各窒化物、実施例
９〜１１はダイヤモンド状炭素、実施例１２、１３はＴ
ｉとＡｌ、１４から１７はＡｌとＣｒ、１８、１９はＴ
ｉとＣｒの各合金の窒化物の膜１を使用している。上記
膜１は、図１に示すように、膜１の層が単相で構成され
たもので、その膜の厚みは２μｍである。That is, Examples 1 to 3 are Ti, Examples 4 and 5 are Al, Examples 6 to 8 are Cr nitrides, Examples 9 to 11 are diamond-like carbon, and Examples 12 and 13 are T
i and Al, 14 to 17 are Al and Cr, 18, 19 are T
The nitride film 1 of each alloy of i and Cr is used. As shown in FIG. 1, the film 1 has a single-layer structure of the film 1 and has a thickness of 2 μm.
【００２６】[0026]
【表１】 [Table 1]
【００２７】表１には、さらに各実施例の膜作成法を示
し、また実施例１２〜１９におけるＴｉ、Ａｌ、Ｃｒの
比（原子数の比）を示す。そして、窒化物の同定は、Ｘ
ＲＤ（Ｘ−ＲａｙＤｉｆｆｒａｃｔｏｒｏｍｅｔｒｙ）
で行い、ダイヤモンド状炭素の存在の確認についてはラ
マン分光でｓｐ3結合の検出で行った。Table 1 further shows the film forming method of each embodiment, and shows the ratio of Ti, Al, and Cr (ratio of the number of atoms) in Examples 12 to 19. And the identification of the nitride is X
RD (X-Ray Diffractionometry)
The existence of diamond-like carbon was confirmed by detecting sp 3 bonds by Raman spectroscopy.
【００２８】また、荷重を１ニュ−トン（１Ｎ）、回転
数を毎分５００回転（５００ｒｐｍ）でＭｇ合金のピン
を部品３表面（すなわち各実施例の被覆膜表面）に押さ
えつけて回転する大気中の試験（ピンオンディスク試
験）を行い、その試験の後に、焼き付き痕である部品表
面（被覆膜表面）の盛り上がり部分の断面積を、触針式
の表面粗さ計で３点測定して求めた。この断面積を実施
例における焼付き量とした。The Mg alloy pin is pressed against the surface of the component 3 (ie, the surface of the coating film of each embodiment) and rotated at a load of 1 Newton (1N) and a rotation speed of 500 revolutions per minute (500 rpm). Perform an air test (pin-on-disk test), and after that test, measure the cross-sectional area of the bulging part of the component surface (coating film surface), which is a seizure mark, at three points using a stylus type surface roughness meter I asked. This cross-sectional area was defined as the seizure amount in the example.
【００２９】そして、膜のない部品３での焼付き量を１
としたときの、実施例での焼き付き量を表１に示してい
る。実施例１〜８、１２〜１９では、焼き付き量が０．
１〜０．７７程度で、従来の膜のないものより格段に優
れた耐焼付き性を持つことが判る。また、実施例９〜１
１は焼付きは認められなかった。Then, the seizure amount in the part 3 without the film is set to 1
Table 1 shows the image sticking amount in the example when the above conditions are satisfied. In Examples 1 to 8 and 12 to 19, the image sticking amount was 0.1.
At about 1 to 0.77, it can be seen that it has much better seizure resistance than the conventional film having no film. Examples 9-1
In No. 1, no seizure was observed.
【００３０】また、射出成型の部品としての金型に本発
明の被覆膜を用いたときの被覆膜の効果を確認するた
め、連続した成型の実験を行った。すなわち、成型を
５、１０、２０回行った後、Ｍｇ合金の金型表面への焼
付きを目視で観察し、焼付きが見られた段階での成型回
数を表１に示した。実施例１〜１９では、５〜２０回の
成型が可能で、膜の全くない従来の部品では成型１回毎
に取り替えねばならないのと比して格段に優れた成型性
を持つことが判る。Further, in order to confirm the effect of the coating film when the coating film of the present invention was used in a mold as a part for injection molding, a continuous molding experiment was conducted. That is, after the molding was performed 5, 10, and 20 times, the seizure of the Mg alloy on the mold surface was visually observed, and the number of moldings at the stage where the seizure was observed is shown in Table 1. In Examples 1 to 19, molding can be performed 5 to 20 times, and it can be seen that the conventional parts having no film have much better moldability than those which have to be replaced every molding.
【００３１】次に、実施例２０〜２６を表２に示してい
る。すなわち、実施例２０〜２２はＴｉ、実施例２３、
２４はＴｉとＡｌの合金、２５、２６はＴｉとＣｒの合
金の各炭化物の各膜１を使用している。Next, Examples 20 to 26 are shown in Table 2. That is, Examples 20 to 22 are Ti, Example 23,
Reference numeral 24 denotes an alloy of Ti and Al, and reference numerals 25 and 26 denote films 1 of carbides of an alloy of Ti and Cr.
【００３２】なお、上記膜１は、図１に示すように、膜
１の層が単相で構成されたもので、その膜の厚みは２μ
ｍである。また炭化物の同定は、窒化物と同様にＸＲＤ
で行った。ピンオンディスク試験による焼付き量の測
定、金型での成型回数測定は実施例１〜１９と同じ方法
である。さらに、表１には実施例２３〜２６でのＴｉ、
Ａｌ，Ｃｒの比（原子数の比）を示している。Ｔｉ、Ａ
ｌ，Ｃｒの比（原子数の比）とは関係なく、Ｍｇ合金の
射出成型部品被覆用膜として、良好な効果を得ている。As shown in FIG. 1, the film 1 has a single-layer structure, and has a thickness of 2 μm.
m. In addition, the identification of carbide is performed by XRD
I went in. The measurement of the seizure amount by the pin-on-disk test and the measurement of the number of moldings in the mold are the same methods as in Examples 1 to 19. Further, Table 1 shows that Ti in Examples 23 to 26,
The ratio of Al and Cr (ratio of the number of atoms) is shown. Ti, A
Regardless of the ratio of l and Cr (ratio of the number of atoms), a good effect is obtained as a coating film for injection-molded parts made of Mg alloy.
【００３３】[0033]
【表２】 [Table 2]
【００３４】次に、実施例２７〜５０を表３に示してい
る。すなわち、実施例２７〜３２はＴｉ、実施例３３、
３４はＡｌ、３５〜３８はＣｒの各炭窒化物、実施３９
〜４２はＴｉとＡｌ、４３〜４６はＡｌとＣｒ、４７〜
５０はＴｉとＣｒの各合金の炭窒化物の膜１を使用して
いる。Next, Examples 27 to 50 are shown in Table 3. That is, Examples 27 to 32 are Ti, Example 33,
34 is Al and 35 to 38 are Cr carbonitrides.
42 to 42 are Ti and Al, 43 to 46 are Al and Cr, 47 to
Reference numeral 50 denotes a carbon nitride film 1 of each alloy of Ti and Cr.
【００３５】なお、上記膜１は、図１に示すように、膜
１の層が単相で構成されたもので、その膜の厚みは２μ
ｍである。また炭窒化物の同定は、窒化物と同様にＸＲ
Ｄで行った。ピンオンディスク試験による焼付き量の測
定、金型での成型回数測定は実施例１〜２６と同じ方法
である。As shown in FIG. 1, the film 1 has a single-phase structure, and has a thickness of 2 μm.
m. In addition, the identification of carbonitride is similar to that of nitride by XR
D. The measurement of the seizure amount by the pin-on-disk test and the measurement of the number of moldings in the mold are the same methods as in Examples 1-26.
【００３６】[0036]
【表３】 [Table 3]
【００３７】あわせて、ＣとＮの比（原子数の比）、Ｔ
ｉ、Ａｌ，Ｃｒの比（原子数の比）を示している。Ｃと
Ｎの比（原子数の比）や、Ｔｉ、Ａｌ，Ｃｒの比（原子
数の比）には関係なく、Ｍｇ合金の射出成型部品被覆膜
として、良好な効果を得ている。In addition, the ratio of C to N (ratio of the number of atoms), T
The ratio of i, Al, and Cr (ratio of the number of atoms) is shown. Regardless of the ratio of C to N (ratio of the number of atoms) and the ratio of Ti, Al, Cr (ratio of the number of atoms), a favorable effect is obtained as a coating film for the injection molded part of the Mg alloy.
【００３８】表４においては、実施例５１〜５３、５８
〜６０はＴｉ、実施例５４、６１はＡｌ、実施例５５〜
５７、６２〜６４はＣｒの各金属を、ダイヤモンド状炭
素の含有物とした膜１の例である。この膜１は、単相の
膜１（図１）のもので、その膜の厚みは２μｍである。In Table 4, Examples 51 to 53, 58
60 is Ti, Examples 54 and 61 are Al, Examples 55 to 55
Reference numerals 57 and 62 to 64 denote examples of the film 1 in which each metal of Cr contains diamond-like carbon. This film 1 is a single-phase film 1 (FIG. 1), and the thickness of the film is 2 μm.
【００３９】[0039]
【表４】 [Table 4]
【００４０】表５においては、実施例６５、６６、７
１、７２はＴｉの炭化物、７７、７８はＴｉの窒化物、
実施例６７、６８、７３、７４はＣｒの炭化物、７９、
８０はＣｒの窒化物、実施例６９、７０、７５、７６は
Ａｌの炭化物、８１、８２はＡｌの窒化物を、ダイヤモ
ンド状炭素に含有させた膜１の例である。この膜１は、
単相の膜１（図１）のもので、その膜の厚みは２μｍで
ある。In Table 5, Examples 65, 66 and 7
1, 72 are Ti carbides, 77, 78 are Ti nitrides,
Examples 67, 68, 73, and 74 are carbides of Cr, 79,
Reference numeral 80 denotes an example of the film 1 in which diamond nitride contains a nitride of Cr, Examples 69, 70, 75, and 76 represent carbides of Al, and 81 and 82 represent nitrides of Al. This membrane 1
The single-phase film 1 (FIG. 1) has a thickness of 2 μm.
【００４１】[0041]
【表５】 [Table 5]
【００４２】そして、実施例５１〜８２毎に、膜の作成
法及びダイヤモンド状炭素の原子％（Ｔｉ、Ａｌ、Ｃｒ
を合わせた原子数とダイヤモンド状炭素（Ｃ）の原子数
の合計に対するダイヤモンド状炭素（Ｃ）の原子％）を
示す。ダイヤモンド状炭素の存在の確認についてはラマ
ン分光でｓｐ3結合の検出で行い、各含有物の原子％
は、ＸＰＳ（Ｘ−Ｒａｙ Ｐｈｏｔｏｅｌｅｃｔｒｏｎ
Ｓｐｅｃｔｒｏｓｃｏｐｙ）を用いて求めた。Then, for each of Examples 51 to 82, the method of forming the film and the atomic% of diamond-like carbon (Ti, Al, Cr
And the total number of atoms of the diamond-like carbon (C) with respect to the total number of atoms of the diamond-like carbon (C)). The existence of diamond-like carbon was confirmed by detecting sp 3 bonds by Raman spectroscopy.
Is XPS (X-Ray Photoelectron)
(Spectroscopy).
【００４３】ピンオンディスク試験による焼付き量の測
定、金型での成型回数の測定は実施例１〜５０と同じで
ある。実施例５１〜８２では、膜のない従来のものより
格段に優れた耐焼付き性を持ち、結果としては、焼付き
は全く発生しなかった。また、成型１回毎に金型を取り
替えねばならない従来のものと比して格段に優れた成型
回数を得ることができる。なお、ダイヤモンド状炭素
（Ｃ）の原子％が７０％未満では膜の効果がなく、膜の
ない部品と同等の状況となる。The measurement of the seizure amount by the pin-on-disk test and the measurement of the number of moldings in the mold are the same as in Examples 1 to 50. In Examples 51 to 82, the seizure resistance was remarkably superior to the conventional one without a film, and as a result, seizure did not occur at all. In addition, it is possible to obtain a significantly superior number of molding times as compared with the conventional one in which the mold has to be replaced for each molding. If the atomic percentage of diamond-like carbon (C) is less than 70%, the effect of the film is not obtained, and a situation equivalent to a component without a film is obtained.
【００４４】表６においては、実施例８３〜８８、９４
〜９９はＴｉの窒化物、実施例８９〜９１、９３、１０
０〜１０２、１０４はＴｉとＡｌの合金、実施例９２、
１０３はＡｌとＣｒの合金の各窒化物の各膜（ａ）、実
施例８３〜８５、９４〜９６はＡｌ、実施例８６〜９
０、９３、９７〜１０１、１０４はＣｒ、実施例９１、
９２、１０２、１０３はＴｉの各窒化物の膜（ｂ）、実
施例８４、８５、９５、９６はＣｒ、実施例９３はＴｉ
の各窒化物の膜（ｃ）を持っている。なお、膜（ａ）、
（ｂ）、（ｃ）は各々単層の膜で、図２（１）には、膜
（ａ）、膜（ｂ）の２層構成を示し、図２（２）は膜
（ａ）、膜（ｂ）、膜（ｃ）の３層とする構成の例を示
している。In Table 6, Examples 83 to 88, 94
-99 are Ti nitrides, Examples 89-91, 93, 10
0 to 102, 104 are alloys of Ti and Al, Example 92,
103 is a film (a) of each nitride of an alloy of Al and Cr, Examples 83 to 85 and 94 to 96 are Al, Examples 86 to 9
0, 93, 97 to 101 and 104 are Cr, Example 91,
92, 102 and 103 are films (b) of each nitride of Ti, Examples 84, 85, 95 and 96 are Cr, and Example 93 is Ti
(C) of each nitride. In addition, the film (a),
(B) and (c) are single-layer films, respectively. FIG. 2 (1) shows a two-layer structure of a film (a) and a film (b), and FIG. An example of a configuration having three layers of a film (b) and a film (c) is shown.
【００４５】[0045]
【表６】 [Table 6]
【００４６】そして、実施例８３、８６〜９２、９４、
９７〜１０３は膜（ａ）と膜（ｂ）の２層構成の例であ
り、実施例８４、８５、９３、９５、９６、１０４は膜
（ａ）、膜（ｂ）と膜（ｃ）の３層構成を示す例であ
り、表６に示す全体の膜厚２〜３．２μｍである膜２を
形成している。Then, Examples 83, 86-92, 94,
97 to 103 are examples of a two-layer structure of the film (a) and the film (b), and Examples 84, 85, 93, 95, 96, and 104 show the film (a), the film (b), and the film (c). In this example, a film 2 having a total film thickness of 2 to 3.2 μm shown in Table 6 is formed.
【００４７】なお、実施例８９〜９１、９３、１００〜
１０２、１０４はＴｉとＡｌ、実施例９２、１０３はＡ
ｌとＣｒの比（原子数の比）は１：１のものである。こ
れらの多層の状態の調査には、ＴＥＭ（Ｔｒａｎｓｍｉ
ｓｓｉｏｎ Ｅｌｅｃｔｒｏｎ Ｍｉｃｒｏｓｃｏｐ
ｅ）観察を行い、また、窒化物の同定は、ＸＲＤで行っ
た。実施例８３〜１０４のものが、従来のものと比較し
て、焼付き量も少なく格段に優れた成型回数を得ること
ができる。Examples 89-91, 93, 100-
102 and 104 are Ti and Al, Examples 92 and 103 are A
The ratio of 1 to Cr (the ratio of the number of atoms) is 1: 1. To investigate the state of these multilayers, a TEM (Transmi
session Electron Microscope
e) Observation was performed, and identification of the nitride was performed by XRD. In Examples 83 to 104, the amount of seizure is small and the number of times of molding is significantly superior to that of the conventional one.
【００４８】なお、実施例１〜８、１２〜１９は窒化
物、実施例２０〜２６は炭化物、実施例２７〜５０は炭
窒化物の例であるが、窒化物、炭化物あるいは炭窒化物
の混合した状況のものを単相とした構成からなる膜１、
窒化物、炭化物あるいは炭窒化物を互いに多層に組み合
わせた構成からなる膜２も、特にデ−タを記載していな
いが、Ｍｇ合金の射出成型部品被覆用膜として、良好な
効果を得る。Examples 1 to 8 and 12 to 19 are examples of nitrides, Examples 20 to 26 are examples of carbides, and Examples 27 to 50 are examples of carbonitrides. A membrane 1 composed of a single phase in a mixed state,
The film 2 composed of a combination of nitrides, carbides or carbonitrides in a multilayer structure, although not described in particular, also provides a good effect as a coating film for injection molding parts of Mg alloy.
【００４９】[0049]
【発明の効果】Ｍｇ合金の射出成型時に用いられる金型
等の部品に被覆膜を用いることにより、Ｍｇ合金が部品
に焼付いたり、更には部品表面が摩耗して使用できない
との問題点が解消して、そのため繰り返しの射出成型が
できる。The use of a coating film on a part such as a mold used in the injection molding of a Mg alloy causes a problem that the Mg alloy is seized on the part or that the part surface is worn and cannot be used. Eliminated, so that repeated injection molding is possible.
【図１】膜の層が単相で構成された状況を示す図であ
る。FIG. 1 shows a situation where the layers of the membrane are composed of a single phase.
【図２】膜の層が多層で構成された状況の例を示す図で
ある。FIG. 2 is a diagram showing an example of a situation in which layers of a film are configured in multiple layers.
【符号の説明】 １、２：膜 ３：部品[Explanation of reference numerals] 1, 2: membrane 3: parts
───────────────────────────────────────────────────── 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 16/30 Ｃ２３Ｃ 16/30 Ｆターム(参考） 4G077 AA03 BA03 BE07 BE09 BE11 BE13 BE18 DA12 DA13 DB07 DB16 HA13 4K029 AA02 BA03 BA07 BA17 BA34 BA54 BA55 BA60 BB02 BC02 BD03 CA01 CA03 CA05 CA12 DC05 4K030 AA09 BA28 CA02 FA01 LA01 LA23 4K044 AA02 AB10 BA18 BB03 BC11 CA13 CA14 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification FI theme coat ゛ (reference) C23C 16/30 C23C 16/30 F term (reference) 4G077 AA03 BA03 BE07 BE09 BE11 BE13 BE18 DA12 DA13 DB07 DB16 HA13 4K029 AA02 BA03 BA07 BA17 BA34 BA54 BA55 BA60 BB02 BC02 BD03 CA01 CA03 CA05 CA12 DC05 4K030 AA09 BA28 CA02 FA01 LA01 LA23 4K044 AA02 AB10 BA18 BB03 BC11 CA13 CA14
Claims (9)
とを特徴とするマグネシウム合金射出成型用部品の被覆
膜。1. A coating film for a magnesium alloy injection-molded part, comprising a diamond-like carbon.
れらの合金の少なくとも一つの窒化物で構成されている
ことを特徴とするマグネシウム合金射出成型用部品の被
覆膜。2. A coating film for a magnesium alloy injection-molded part, comprising a titanium, aluminum, chromium or at least one nitride of an alloy thereof.
れらの合金の少なくとも一つの炭化物で構成されている
ことを特徴とするマグネシウム合金射出成型用部品の被
覆膜。3. A coating film for a magnesium alloy injection molded part, comprising a carbide of at least one of titanium, aluminum, chromium or an alloy thereof.
とする請求項３記載のマグネシウム合金射出成型用部品
の被覆膜。4. A coating film for a magnesium alloy injection-molded part according to claim 3, wherein said carbide is carbonitride.
子％を有し、含有物がチタン、アルミニウム、クロムま
たはこれらの合金の少なくとも一つの金属であることを
特徴とするマグネシウム合金射出成型用部品の被覆膜。5. Coating for parts for magnesium alloy injection molding, characterized in that the diamond-like carbon has at least 70 atom% and the content is at least one metal of titanium, aluminum, chromium or alloys thereof. film.
子％を有し、含有物がチタン、アルミニウム、クロムま
たはこれらの合金の少なくとも一つの窒化物であること
を特徴とするマグネシウム合金射出成型用部品の被覆
膜。6. A magnesium alloy injection-molded part characterized in that the diamond-like carbon has at least 70 atomic% and the content is titanium, aluminum, chromium or at least one nitride of these alloys. Covering.
子％を有し、含有物がチタン、アルミニウム、クロムま
たはこれらの合金の少なくとも一つの炭化物であること
を特徴とするマグネシウム合金射出成型用部品の被覆
膜。7. Coating for magnesium alloy injection-molded parts, characterized in that the diamond-like carbon has at least 70 atomic% and the content is titanium, aluminum, chromium or at least one carbide of these alloys. film.
とする請求項７記載のマグネシウム合金射出成型用部品
の被覆膜。8. A coating film for a magnesium alloy injection-molded part according to claim 7, wherein said carbide is a carbonitride.
を少なくとも２以上組み合わせた多層構造としたことを
特徴とするマグネシウム合金射出成型用部品の被覆膜。9. A coating film for a magnesium alloy injection-molded part, having a multilayer structure in which at least two or more of the films according to claim 1 are combined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10192509A JP2000026195A (en) | 1998-07-08 | 1998-07-08 | Coating film of component for injection molding of magnesium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10192509A JP2000026195A (en) | 1998-07-08 | 1998-07-08 | Coating film of component for injection molding of magnesium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000026195A true JP2000026195A (en) | 2000-01-25 |
Family
ID=16292478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10192509A Pending JP2000026195A (en) | 1998-07-08 | 1998-07-08 | Coating film of component for injection molding of magnesium alloy |
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| Country | Link |
|---|---|
| JP (1) | JP2000026195A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003088939A (en) * | 2001-09-14 | 2003-03-25 | Sumitomo Electric Ind Ltd | Coating member for metal molding machine |
| JP2003286564A (en) * | 2002-03-29 | 2003-10-10 | Kobe Steel Ltd | Target for physical vapor deposition and manufacturing method therefor |
| US7008688B2 (en) | 2001-03-13 | 2006-03-07 | Osg Corporation | Hard multilayer coating, hard multilayer coated tool including the hard multilayer coating, and method of forming the hard multilayer coating |
| JP2007126746A (en) * | 2005-10-03 | 2007-05-24 | Kirin Brewery Co Ltd | Diamond-like carbon thin film, and plastic film and gas barrier plastic bottle with the thin film formed on their surface |
| US8277952B2 (en) | 2008-12-24 | 2012-10-02 | Kabushiki Kaisha Toyota Jidoshokki | Sliding member for compressor |
-
1998
- 1998-07-08 JP JP10192509A patent/JP2000026195A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7008688B2 (en) | 2001-03-13 | 2006-03-07 | Osg Corporation | Hard multilayer coating, hard multilayer coated tool including the hard multilayer coating, and method of forming the hard multilayer coating |
| JP2003088939A (en) * | 2001-09-14 | 2003-03-25 | Sumitomo Electric Ind Ltd | Coating member for metal molding machine |
| JP4701568B2 (en) * | 2001-09-14 | 2011-06-15 | 住友電気工業株式会社 | Covering member for metal forming machine |
| JP2003286564A (en) * | 2002-03-29 | 2003-10-10 | Kobe Steel Ltd | Target for physical vapor deposition and manufacturing method therefor |
| JP2007126746A (en) * | 2005-10-03 | 2007-05-24 | Kirin Brewery Co Ltd | Diamond-like carbon thin film, and plastic film and gas barrier plastic bottle with the thin film formed on their surface |
| US8277952B2 (en) | 2008-12-24 | 2012-10-02 | Kabushiki Kaisha Toyota Jidoshokki | Sliding member for compressor |
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