JPH0988961A - Sliding member - Google Patents
Sliding memberInfo
- Publication number
- JPH0988961A JPH0988961A JP25109395A JP25109395A JPH0988961A JP H0988961 A JPH0988961 A JP H0988961A JP 25109395 A JP25109395 A JP 25109395A JP 25109395 A JP25109395 A JP 25109395A JP H0988961 A JPH0988961 A JP H0988961A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- particle
- plating film
- dispersed
- solid lubricating
- 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
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、初期馴染み性、潤
滑性、及び耐摩耗性の優れた金属メッキ皮膜を形成した
摺動部材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding member having a metal plating film which is excellent in initial conformability, lubricity and wear resistance.
【０００２】[0002]
【従来の技術】従来、各種機械の中の軸・軸受部や内燃
機関中のピストンリング・シリンダ部等、極力摩耗せ
ず、焼き付くことなく、かつ摩擦抵抗も低い安定した摺
動を要求される箇所には、表面改質の一手法として、硬
質クロムメッキ、無電解Ｎｉ−Ｐメッキ等の金属メッキ
皮膜形成による表面硬化法が多く用いられてきた。2. Description of the Related Art Conventionally, stable sliding such as shafts and bearings in various machines, piston rings and cylinders in internal combustion engines, etc., which are not subject to wear, seizure, and low frictional resistance are required. A surface hardening method by forming a metal plating film such as hard chrome plating or electroless Ni-P plating has been often used in the place as a method of surface modification.
【０００３】表面処理方法の中でも、金属メッキ皮膜法
は、イオンプレーティング法や溶射法等の他の表面改質
法に比べ、安価で簡便な方法として広く普及してきてい
る。しかし、こうした金属メッキ皮膜単体では、摺動条
件によっては十分な耐摩耗性を有しているとは言えず、
また自己潤滑性にも乏しい。そのため、耐摩耗性を高め
る目的で、皮膜中に、セラミックス等の硬質粒子を複合
分散させたり、耐焼付き性及び自己潤滑性を高める目的
で、テフロン樹脂や二硫化モリブデン等の固体潤滑粒子
を複合分散させる等により、摺動特性の向上措置がとら
れていた。また、最近では、耐摩耗性と自己潤滑性とを
同時に付与する目的で、金属マトリックス中に硬質粒子
と固体潤滑粒子の双方を同時に複合分散させる複合メッ
キ皮膜が、例えば特開平２−２１３４９８号公報に提案
されている。Among the surface treatment methods, the metal plating film method has become widespread as an inexpensive and simple method as compared with other surface modification methods such as an ion plating method and a thermal spraying method. However, such a metal plating film alone cannot be said to have sufficient wear resistance depending on sliding conditions,
Also, it is poor in self-lubricating property. Therefore, in order to improve wear resistance, hard particles such as ceramics are dispersed in the coating, or solid lubricating particles such as Teflon resin and molybdenum disulfide are combined for the purpose of enhancing seizure resistance and self-lubrication. Measures have been taken to improve the sliding characteristics, such as by dispersing. Further, recently, for the purpose of simultaneously imparting wear resistance and self-lubricating property, a composite plating film in which both hard particles and solid lubricating particles are simultaneously dispersed and dispersed in a metal matrix is disclosed in, for example, JP-A-2-213498. Has been proposed to.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
ような従来の複合メッキ皮膜では、例えば、金属マトリ
ックス中に硬質粒子のみを複合分散させた場合、皮膜を
形成した摺動部材の耐摩耗性は向上するが、潤滑性は向
上しないので、焼き付き防止に対しては効果を有さな
い。一方、金属マトリックス中に固体潤滑粒子のみを複
合分散させた場合には、潤滑性や耐焼き付き性は向上し
ても、強度の低い軟質材料を含有することになるために
耐摩耗性に劣り、過酷な摺動条件下では早期に皮膜層が
消失してしまうことがあった。However, in the conventional composite plating film as described above, for example, when only hard particles are compositely dispersed in the metal matrix, the wear resistance of the sliding member formed with the film is Improves, but does not improve lubricity, so it is not effective in preventing seizure. On the other hand, when only the solid lubricating particles are compositely dispersed in the metal matrix, even if the lubricity and the seizure resistance are improved, the wear resistance is poor because the soft material having low strength is contained, Under severe sliding conditions, the coating layer may disappear early.
【０００５】また、硬質粒子及び固体潤滑粒子それぞれ
が有する長所を取り入れる目的で、金属マトリックス中
に双方の粒子を複合分散させた場合においては、これま
で、それぞれの粒子の相対的大きさについて考慮された
ことがなかった。Further, in the case where both particles are compositely dispersed in a metal matrix for the purpose of incorporating the advantages of the hard particles and the solid lubricating particles, the relative size of each particle has been considered so far. I've never been there.
【０００６】粒径が略等しい硬質粒子と固体潤滑粒子と
を金属メッキ皮膜中に複合分散させた場合、硬度の高い
材料ほど耐摩耗性に優れるから、表面層に分散された硬
質粒子の働きにより、表面層の耐摩耗性は向上する。一
方、固体潤滑剤は、それ自身が摩耗することにより、潤
滑性に富んだ皮膜が表面層を覆い、この固体潤滑膜によ
って潤滑効果を発揮する。すなわち、硬質粒子と固体潤
滑粒子は、摩耗に関して相反する性質を有し、硬質粒子
の存在により、摺動部材の耐摩耗性が向上すると、固体
潤滑粒子の摩耗は阻害され、固体潤滑膜の形成が妨げら
れるため、焼き付き防止効果は発揮されない。このよう
に、硬質粒子及び固体潤滑粒子をほぼ粒径を等しくして
分散すると、各粒子の効果が相殺されてしまい、それぞ
れの粒子の長所を十分引き出せないという欠点があっ
た。When hard particles and solid lubricating particles having substantially the same particle size are compositely dispersed in a metal plating film, the harder the material, the better the wear resistance. The wear resistance of the surface layer is improved. On the other hand, when the solid lubricant wears, the film having a high lubricity covers the surface layer, and the solid lubricant film exhibits a lubricating effect. That is, the hard particles and the solid lubricating particles have contradictory properties with respect to wear. When the wear resistance of the sliding member is improved due to the presence of the hard particles, the wear of the solid lubricating particles is hindered and the formation of the solid lubricating film is formed. As a result, the seizure prevention effect is not exerted. As described above, when the hard particles and the solid lubricating particles are dispersed so that the particle diameters thereof are substantially equal to each other, the effects of the respective particles are canceled out, and there is a drawback that the advantages of the respective particles cannot be sufficiently brought out.
【０００７】本発明は、上述した問題点を解決するため
になされたものであり、摺動部材に対し、硬質粒子及び
固体潤滑粒子を同時に複合分散した複合メッキ皮膜を施
す場合に、各粒子の相対的な大きさを設定することによ
り、それぞれの分散粒子の長所を十分に引き出し、初期
馴染み性、潤滑性、耐摩耗性に優れた摺動部材を提供す
ることにある。The present invention has been made to solve the above-mentioned problems. When a composite plating film in which hard particles and solid lubricating particles are simultaneously dispersed and composite is applied to a sliding member, An object of the present invention is to provide a sliding member which is excellent in initial conformability, lubricity, and wear resistance, by sufficiently setting advantages of each dispersed particle by setting relative sizes.
【０００８】[0008]
【課題を解決するための手段】この目的を達成するため
に、請求項１記載の本発明の摺動部材は、微粒子粉末を
金属メッキ皮膜中に分散させる複合メッキ皮膜を施し、
この複合メッキ皮膜中に、硬質粒子及び固体潤滑粒子の
両粒子を容積比で約３〜３０％含有するように複合分散
し、前記両粒子の平均粒径が、それぞれ約０．１〜１０
μｍであって、かつ、前記硬質粒子と固体潤滑粒子の粒
径比が約１対２以上になるように設定している。To achieve this object, the sliding member of the present invention according to claim 1 is provided with a composite plating film in which fine particle powder is dispersed in a metal plating film,
In this composite plating film, both hard particles and solid lubricating particles are compositely dispersed so as to be contained in a volume ratio of about 3 to 30%, and the average particle size of both particles is about 0.1 to 10 respectively.
μm, and the particle size ratio of the hard particles and the solid lubricating particles is set to about 1: 2 or more.
【０００９】上記のような構成の摺動部材によれば、固
体潤滑粒子は硬質粒子に比べて大きな粒径を有するため
に、皮膜形成時に表面より突出する固体潤滑粒子の凸部
も、硬質粒子よりも相対的に大きくなる。このため、こ
の摺動部材が、摺動対となる相手材料と接して摺動を始
めるとき、まず表面上の無数の固体潤滑粒子が相手材料
表面と接触し、滑り、摺動面間に薄膜となって延ばされ
る。このようにして、固体潤滑膜が、摺動後間もなく摺
動面間に展延して形成され、摺動に対して潤滑性を付与
する。また、この固体潤滑膜がクッション材となって、
摺動面間の局部的な片当たりとそれに伴う過大面圧を軽
減し、焼き付きを防止し、安定した初期馴染み過程を促
進する。さらに、初期馴染み過程の終了後は、前記複合
メッキ皮膜は、硬質粒子の効果により、優れた耐摩耗性
を発揮し、半永久的な摺動面を提供する。According to the sliding member having the above-mentioned structure, since the solid lubricating particles have a larger particle size than the hard particles, the convex portions of the solid lubricating particles protruding from the surface when the film is formed are hard particles. Will be relatively larger than. For this reason, when this sliding member comes into contact with the mating material to be a sliding pair and starts sliding, first, innumerable solid lubricating particles on the surface come into contact with the mating surface of the mating material, causing a slip and a thin film between the sliding surfaces. Will be postponed. In this way, the solid lubricating film is formed to spread between the sliding surfaces shortly after sliding, and imparts lubricity to sliding. Also, this solid lubricating film serves as a cushion material,
It reduces local uneven contact between sliding surfaces and the resulting excessive surface pressure, prevents seizure, and promotes a stable initial familiarization process. Further, after the initial familiarization process, the composite plating film exhibits excellent wear resistance due to the effect of the hard particles, and provides a semi-permanent sliding surface.
【００１０】[0010]
【発明の実施の形態】以下、本発明を具体化した実施の
形態を図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は、複合メッキ皮膜を施した摺動部材
の断面図である。鉄系材料製の基材１の上には、無電解
Ｎｉ−Ｐメッキ皮膜２をマトリックスとして、炭化珪素
（ＳｉＣ）セラミックス粒子３及び二硫化モリブデン
（ＭｏＳ2）粒子４を、容積比で約３〜３０％均一分散
した複合メッキ皮膜層５が、約５〜１００μｍの膜厚で
形成されている。ここで、炭化珪素セラミックス粒子３
及び二硫化モリブデン粒子４の粒径は、どちらも約０．
１〜１０μｍの間にあり、かつ、炭化珪素セラミックス
粒子３と二硫化モリブデン粒子４の粒径比が約１対２以
上になるように設定されている。FIG. 1 is a sectional view of a sliding member provided with a composite plating film. On a base material 1 made of an iron-based material, an electroless Ni-P plating film 2 is used as a matrix, and silicon carbide (SiC) ceramic particles 3 and molybdenum disulfide (MoS 2 ) particles 4 in a volume ratio of about 3 are used. The composite plating film layer 5 uniformly dispersed by 30% is formed in a film thickness of about 5-100 μm. Here, silicon carbide ceramic particles 3
The particle size of the molybdenum disulfide particles 4 is about 0.
It is set between 1 and 10 μm, and the particle size ratio of the silicon carbide ceramic particles 3 and the molybdenum disulfide particles 4 is set to be about 1: 2 or more.
【００１２】複合メッキ皮膜層５に複合分散する硬質粒
子としては、上記の炭化珪素セラミックスの他に、窒化
珪素（Ｓｉ3Ｎ4）、アルミナ（Ａｌ2Ｏ3）、ジルコニア
（ＺｒＯ2）、クロミア（Ｃｒ2Ｏ3）等のセラミックス
や、ＷＣ等の超硬金属等、一般にビッカース硬さで１０
００以上の材料を用いると良い。また、固体潤滑粒子と
しては、上記の二硫化モリブデンの他に、黒鉛（Ｃ）、
窒化ボロン（ＢＮ）、テフロン樹脂（ＰＴＦＥ）等の低
摩擦材料を用いると良い。As the hard particles which are compositely dispersed in the composite plating layer 5, in addition to the above silicon carbide ceramics, silicon nitride (Si 3 N 4 ), alumina (Al 2 O 3 ), zirconia (ZrO 2 ), chromia. Ceramics such as (Cr 2 O 3 ) and superhard metals such as WC generally have a Vickers hardness of 10
It is preferable to use a material of 00 or more. In addition to the above molybdenum disulfide, solid lubricating particles include graphite (C),
It is preferable to use a low friction material such as boron nitride (BN) or Teflon resin (PTFE).
【００１３】これら分散粒子の分散率を、容積比で約３
〜３０％としたのは、分散率が約３％以下では、焼き付
きの防止・耐摩耗性の向上等の、これらの粒子を分散さ
せた効果が現れないためであり、一方、分散率約３０％
以上では、メッキ皮膜の脆弱化を招くことによる。ま
た、粒径を約０．１〜１０μｍの間としたのは、約０．
１μｍ以下では、やはり分散粒子の効果が現れないため
であり、一方、約１０μｍ以上では、特に硬質粒子によ
る相手材攻撃性が増してしまうことによる。また、硬質
粒子と固体潤滑粒子の粒径比を１対２以上としたのは、
これ以下では、皮膜表面から固体潤滑粒子が十分に突出
せず、表層部分において、硬質粒子が働く前に固体潤滑
粒子が摩耗して固体潤滑膜を形成することによる潤滑効
果を十分にあげることができないことによる。The dispersion ratio of these dispersed particles is about 3 by volume ratio.
The reason why the dispersion ratio is about 30% is that when the dispersion ratio is about 3% or less, the effects of dispersing these particles, such as prevention of seizure and improvement of abrasion resistance, do not appear, while the dispersion ratio is about 30%. %
The above is because the plating film is fragile. Further, the reason why the particle size is between about 0.1 and 10 μm is about 0.
This is because when the thickness is 1 μm or less, the effect of the dispersed particles does not appear, while when the thickness is about 10 μm or more, the attacking property of the mating material by the hard particles increases. Further, the particle size ratio of the hard particles and the solid lubricating particles is set to 1: 2 or more,
Below this, solid lubricating particles do not sufficiently project from the surface of the coating, and in the surface layer portion, the lubricating effect can be sufficiently enhanced by abrading the solid lubricating particles before the hard particles work to form a solid lubricating film. It depends on what you cannot do.
【００１４】上記の実施形態においては、複合メッキ皮
膜層５のマトリックスに無電解Ｎｉ−Ｐ系メッキを用い
ているが、この他に、無電解Ｎｉ−Ｂ系、電解Ｎｉ、硬
質クロム等の金属メッキを用いても良い。また、基材１
には、使用目的、用途に応じて金属、セラミックス、樹
脂等、様々な材料を使用することができる。In the above embodiment, electroless Ni-P system plating is used for the matrix of the composite plating layer 5, but in addition to this, metals such as electroless Ni-B system, electrolytic Ni and hard chromium are used. You may use plating. In addition, substrate 1
As the material, various materials such as metal, ceramics, and resin can be used depending on the purpose and application.
【００１５】[0015]
【発明の効果】以上説明したことから明かなように、請
求項１記載の本発明の摺動部材によれば、複合メッキ皮
膜中に、容積比で約３〜３０％分散された硬質粒子及び
固体潤滑粒子の両粒子を、平均粒径それぞれ約０．１〜
１０μｍで、かつ、前記硬質粒子と固体潤滑粒子の粒径
比が約１対２以上になるように設定したため、皮膜形成
時に表面より突出する固体潤滑粒子の凸部が硬質粒子よ
りも相対的に大きくなる。従って、摺動初期に固体潤滑
膜が摺動面間に形成され易く、この固体潤滑膜が、潤滑
性と安定した初期馴染み過程を与え、また、初期馴染み
後は、硬質粒子の存在により、耐摩耗性に優れた皮膜を
提供することができる。このように、硬質粒子及び固体
潤滑粒子それぞれの長所を十分に引き出し、初期馴染み
性、潤滑性、耐摩耗性に優れた摺動部材を提供すること
ができる。As is apparent from the above description, according to the sliding member of the present invention as set forth in claim 1, the hard particles dispersed in the composite plating film in an amount of about 3 to 30% by volume and Both particles of the solid lubricating particles have an average particle size of about 0.1 to
Since the particle diameter ratio between the hard particles and the solid lubricating particles was set to about 1 to 2 or more, the projections of the solid lubricating particles protruding from the surface during film formation were relatively more than hard particles. growing. Therefore, a solid lubricating film is likely to be formed between the sliding surfaces at the initial stage of sliding, and this solid lubricating film provides lubricity and a stable initial familiarization process. It is possible to provide a film having excellent abrasion resistance. Thus, the advantages of the hard particles and the solid lubricating particles can be fully brought out, and a sliding member having excellent initial familiarity, lubricity, and wear resistance can be provided.
【図１】本発明の一実施形態の摺動部材の断面図であ
る。FIG. 1 is a sectional view of a sliding member according to an embodiment of the present invention.
３ 炭化珪素セラミックス粒子 ４ 二硫化モリブデン粒子 ５ 複合メッキ皮膜 3 Silicon carbide ceramic particles 4 Molybdenum disulfide particles 5 Composite plating film
Claims (1)
せた複合メッキ皮膜を施した摺動部材において、 前記複合メッキ皮膜は、その皮膜中に、硬質粒子及び固
体潤滑粒子の両粒子が容積比で約３〜３０％含有される
ように複合分散され、前記両粒子の平均粒径は、それぞ
れ約０．１〜１０μｍであって、かつ、前記硬質粒子と
固体潤滑粒子の粒径比が約１対２以上になるように設定
されていることを特徴とする摺動部材。1. A sliding member provided with a composite plating film in which fine particle powder is dispersed in a metal plating film, wherein the composite plating film has a volume ratio of both hard particles and solid lubricating particles. In the composite dispersion so as to contain about 3 to 30% by weight, the average particle diameter of both particles is about 0.1 to 10 μm, and the particle diameter ratio of the hard particles and the solid lubricating particles is about. A sliding member characterized by being set to have a ratio of 1: 2 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25109395A JPH0988961A (en) | 1995-09-28 | 1995-09-28 | Sliding member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25109395A JPH0988961A (en) | 1995-09-28 | 1995-09-28 | Sliding member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0988961A true JPH0988961A (en) | 1997-03-31 |
Family
ID=17217547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25109395A Pending JPH0988961A (en) | 1995-09-28 | 1995-09-28 | Sliding member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0988961A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11225826A (en) * | 1998-02-19 | 1999-08-24 | Shiseido Co Ltd | Rod-shaped cosmetic container |
| JP2004183682A (en) * | 2002-11-29 | 2004-07-02 | Koyo Seiko Co Ltd | Rolling sliding component and roller cam follower using the same |
| JP2004353730A (en) * | 2003-05-28 | 2004-12-16 | Aisin Seiki Co Ltd | Bearing unit |
| JP2007332454A (en) * | 2006-04-12 | 2007-12-27 | Mikarome Ind Co Ltd | Method for preparing molybdenum disulfide composite plating liquid, molybdenum disulfide composite plating method and nickel-molybdenum disulfide composite plating film |
-
1995
- 1995-09-28 JP JP25109395A patent/JPH0988961A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11225826A (en) * | 1998-02-19 | 1999-08-24 | Shiseido Co Ltd | Rod-shaped cosmetic container |
| JP2004183682A (en) * | 2002-11-29 | 2004-07-02 | Koyo Seiko Co Ltd | Rolling sliding component and roller cam follower using the same |
| JP2004353730A (en) * | 2003-05-28 | 2004-12-16 | Aisin Seiki Co Ltd | Bearing unit |
| JP2007332454A (en) * | 2006-04-12 | 2007-12-27 | Mikarome Ind Co Ltd | Method for preparing molybdenum disulfide composite plating liquid, molybdenum disulfide composite plating method and nickel-molybdenum disulfide composite plating film |
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