JP2015212425A5

JP2015212425A5 -

Info

Publication number: JP2015212425A5
Application number: JP2015151002A
Authority: JP
Filing date: 2015-07-30
Publication date: 2016-03-24
Anticipated expiration: 2033-03-25

Description

上記した目的を達成するために、本発明が採用した構成を図面を参照して説明すると、請求項１に係る発明は、図１乃至図３に示すように、素地２中にＭｎ−Ｓｉ系化合物３，５を分散させた銅合金からなる基体１と固体潤滑剤６とを用いた銅系摺動部材７であって、前記銅合金は、Ｓｉが０．３〜２．０質量％、Ｍｎが１．０〜６．０質量％、Ｚｎが２０〜４０質量％、残部がＣｕ及び不可避的不純物から構成され、前記基体１には複数の孔または凹部が形成され、該孔または凹部には前記固体潤滑剤６が埋設されている銅系摺動部材７において、前記Ｍｎ−Ｓｉ系化合物３，５は、長軸方向の長さが５０μｍ以上である針状Ｍｎ−Ｓｉ系化合物３の粒子を含み、該針状Ｍｎ−Ｓｉ系化合物３の総数の５０％以上が複数の小粒子４から構成されることを特徴とする。 In order to achieve the above object, the configuration adopted by the present invention will be described with reference to the drawings. The invention according to claim 1 is an Mn-Si system in the substrate 2 as shown in FIGS. A copper-based sliding member 7 using a base 1 made of a copper alloy in which compounds 3 and 5 are dispersed and a solid lubricant 6, wherein the copper alloy has a Si content of 0.3 to 2.0 mass%, Mn is 1.0 to 6.0% by mass, Zn is 20 to 40% by mass, the balance is composed of Cu and inevitable impurities, and the substrate 1 is formed with a plurality of holes or recesses. In the copper-based sliding member 7 in which the solid lubricant 6 is embedded, the Mn-Si compounds 3 and 5 are needle-like Mn-Si compounds 3 having a length in the major axis direction of 50 μm or more. 50% or more of the total number of the acicular Mn—Si compounds 3 is composed of a plurality of small particles 4. Characterized in that it is.

請求項５に係る発明は、請求項１乃至請求項４のいずれかに記載の銅系摺動部材７において、前記銅合金は、Ｆｅ、Ａｌ、Ｎｉ、Ｓｎ、Ｃｒ、Ｔｉ、Ｍｏ、Ｃｏ、Ｚｒ、Ｓｂより選択される少なくとも１種以上を総量で０．１〜５質量％含有し、前記Ｚｎと、前記Ｆｅ、Ａｌ、Ｎｉ、Ｓｎ、Ｃｒ、Ｔｉ、Ｍｏ、Ｃｏ、Ｚｒ、Ｓｂより選択される少なくとも１種以上と、の総量は、４０質量％以下であることを特徴とする。The invention according to claim 5 is the copper-based sliding member 7 according to any one of claims 1 to 4, wherein the copper alloy is Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Contains at least one or more selected from Zr and Sb in a total amount of 0.1 to 5% by mass, selected from Zn, Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, and Sb The total amount of at least one selected from the above is 40% by mass or less.

請求項６に係る発明は、請求項１乃至請求項４のいずれかに記載の銅系摺動部材７において、前記銅合金は、Ｐｂ、Ｂｉより選択される少なくとも１種以上を総量で０．１〜５質量％含有し、前記Ｚｎと、前記Ｐｂ、Ｂｉより選択される少なくとも１種以上と、の総量は、４０質量％以下であることを特徴とする。The invention according to claim 6 is the copper-based sliding member 7 according to any one of claims 1 to 4, wherein the copper alloy is at least one selected from Pb and Bi in a total amount of 0.00. 1 to 5% by mass, and the total amount of Zn and at least one selected from Pb and Bi is 40% by mass or less.
請求項７に係る発明は、請求項１乃至請求項４のいずれかに記載の銅系摺動部材７において、前記銅合金は、Ｆｅ、Ａｌ、Ｎｉ、Ｓｎ、Ｃｒ、Ｔｉ、Ｍｏ、Ｃｏ、Ｚｒ、Ｓｂより選択される少なくとも１種以上を総量で０．１〜５質量％と、Ｐｂ、Ｂｉより選択される少なくとも１種以上を総量で０．１〜５質量％と、を含有し、前記Ｚｎと、前記Ｆｅ、Ａｌ、Ｎｉ、Ｓｎ、Ｃｒ、Ｔｉ、Ｍｏ、Ｃｏ、Ｚｒ、Ｓｂより選択される少なくとも１種以上と、前記Ｐｂ、Ｂｉより選択される少なくとも１種以上と、の総量は、４０質量％以下であることを特徴とする。The invention according to claim 7 is the copper-based sliding member 7 according to any one of claims 1 to 4, wherein the copper alloy is Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Containing at least one selected from Zr and Sb in a total amount of 0.1 to 5% by mass and at least one selected from Pb and Bi in a total amount of 0.1 to 5% by mass, Total amount of Zn, at least one selected from Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, Sb, and at least one selected from Pb, Bi Is 40% by mass or less.

また、本発明の固体潤滑剤６は、例えば、黒鉛、ＭｏＳ_２、ＷＳ_２、ＢＮ、ＰＴＦＥのうち少なくとも１種以上から選択することができる。 Also, the solid lubricant 6 of the present invention, for example, can be selected _graphite, from MoS _2, WS 2, BN, at least one or more of PTFE.

なお、請求項１に係る発明のように、銅合金は、Ｓｉが０．３〜２．０質量％、Ｍｎが１．０〜６．０質量％、Ｚｎが２０〜４０質量％、残部がＣｕ及び不可避的不純物から構成されている。Ｓｉは、Ｍｎと反応し、摺動特性の向上に寄与するＭｎ−Ｓｉ系化合物を形成する元素であり、０．３〜２．０質量％含有させている。Ｓｉが０．３質量％未満では、Ｍｎ−Ｓｉ系化合物の形成量が少ないため、摺動特性の向上の効果が不十分となり、２．０質量％を超えると、銅合金が硬くなりすぎる。より好ましくは、Ｓｉの含有量が０．６〜１．２質量％の範囲である。 In addition, like invention concerning Claim 1 , Si is 0.3-2.0 mass%, Mn is 1.0-6.0 mass%, Zn is 20-40 mass%, and remainder is 0.3-2.0 mass%. It consists of Cu and inevitable impurities. Si is an element that reacts with Mn to form a Mn—Si-based compound that contributes to the improvement of sliding properties, and is contained in an amount of 0.3 to 2.0 mass%. If Si is less than 0.3% by mass, the amount of Mn-Si compound formed is small, so that the effect of improving the sliding characteristics is insufficient. If it exceeds 2.0% by mass, the copper alloy becomes too hard. More preferably, the Si content is in the range of 0.6 to 1.2% by mass.

Ｚｎは、耐腐食性に寄与する元素であり、２０〜４０質量％含有させることが好ましい。Ｚｎが２０質量％未満では、高温環境下での耐腐食性が十分でなく、４０質量％を超えると、銅合金が硬くなりすぎる。より好ましくは、Ｚｎの含有量が２８〜４０質量％の範囲である。 Z n is an element contributing to corrosion resistance, it is preferable to contain 20 to 40 wt%. If Zn is less than 20% by mass, the corrosion resistance in a high temperature environment is not sufficient, and if it exceeds 40% by mass, the copper alloy becomes too hard. More preferably, the Zn content is in the range of 28 to 40% by mass.

また、請求項５に係る発明のように、銅合金は、さらにＦｅ、Ａｌ、Ｎｉ、Ｓｎ、Ｃｒ、Ｔｉ、Ｍｏ、Ｃｏ、Ｚｒ、Ｓｂより選択される少なくとも１種以上を総量で０．１〜５質量％含有させてもよい。なお、前記Ｚｎと、前記Ｆｅ、Ａｌ、Ｎｉ、Ｓｎ、Ｃｒ、Ｔｉ、Ｍｏ、Ｃｏ、Ｚｒ、Ｓｂ、より選択される少なくとも１種以上と、の総量は、４０質量％以下になされる。Ｆｅ、Ａｌ、Ｎｉ、Ｓｎ、Ｃｒ、Ｔｉ、Ｍｏ、Ｃｏ、Ｚｒ、Ｓｂは、銅合金のマトリクスの強化に寄与する元素であり、０．１〜５質量％含有させることが好ましい。これらの元素が０．１質量％未満では、銅合金の強度向上の効果が不十分であり、５質量％を超えると、銅合金が硬くなりすぎる。また、これらの元素は、ＭｎやＳｉと結合し、化合物を形成することもある。本発明における針状Ｍｎ−Ｓｉ系化合物３は、上記の元素との化合物であってもよい。 Further, as in the invention according to claim 5, the copper alloy further includes at least one selected from Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, and Sb in a total amount of 0.1. You may make it contain -5 mass%. Note that the total amount of Zn and at least one selected from Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, and Sb is 40% by mass or less. Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, and Sb are elements that contribute to strengthening of the copper alloy matrix, and are preferably contained in an amount of 0.1 to 5% by mass. If these elements are less than 0.1% by mass, the effect of improving the strength of the copper alloy is insufficient, and if it exceeds 5% by mass, the copper alloy becomes too hard. Moreover, these elements may combine with Mn and Si to form a compound. The acicular Mn—Si-based compound 3 in the present invention may be a compound with the above element.

また、請求項６に係る発明のように、銅合金は、さらにＰｂ、Ｂｉより選択される少なくとも１種以上を総量で０．１〜５質量％含有させてもよい。なお、前記Ｚｎと、前記Ｐｂ、Ｂｉ、より選択される少なくとも１種以上と、の総量は、４０質量％以下になされる。Ｐｂ、Ｂｉは、潤滑性の向上に寄与する元素であり、０．１〜５質量％含有させることが好ましい。これらの元素が０．１質量％未満では、潤滑性の向上の効果が不十分であり、５質量％を超えると、銅合金が硬くなりすぎる。
また、請求項７に係る発明のように、銅合金は、さらにＦｅ、Ａｌ、Ｎｉ、Ｓｎ、Ｃｒ、Ｔｉ、Ｍｏ、Ｃｏ、Ｚｒ、Ｓｂより選択される少なくとも１種以上を総量で０．１〜５質量％と、Ｐｂ、Ｂｉより選択される少なくとも１種以上を総量で０．１〜５質量％と、を含有させてもよい。なお、前記Ｚｎと、Ｆｅ、Ａｌ、Ｎｉ、Ｓｎ、Ｃｒ、Ｔｉ、Ｍｏ、Ｃｏ、Ｚｒ、Ｓｂより選択される少なくとも１種以上と、前記Ｐｂ、Ｂｉ、より選択される少なくとも１種以上と、の総量は、４０質量％以下になされる。
Further, as in the invention according to claim 6, the copper alloy may further contain 0.1 to 5% by mass in total of at least one selected from Pb and Bi. The total amount of Zn and at least one selected from Pb and Bi is 40% by mass or less. Pb and Bi are elements that contribute to the improvement of lubricity, and are preferably contained in an amount of 0.1 to 5% by mass. If these elements are less than 0.1% by mass, the effect of improving lubricity is insufficient, and if it exceeds 5% by mass, the copper alloy becomes too hard.
Further, as in the invention according to claim 7, the copper alloy further includes at least one selected from Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, and Sb in a total amount of 0.1. -5 mass% and at least one selected from Pb and Bi may be contained in a total amount of 0.1-5 mass%. The Zn and at least one selected from Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, and Sb, and at least one selected from the Pb and Bi, The total amount of is made 40% by mass or less.

Claims

A copper-based sliding member using a base made of a copper alloy in which a Mn-Si-based compound is dispersed in a substrate and a solid lubricant,
The copper alloy is composed of 0.3 to 2.0% by mass of Si, 1.0 to 6.0% by mass of Mn, 20 to 40% by mass of Zn, the balance being Cu and inevitable impurities,
In the copper-based sliding member in which a plurality of holes or recesses are formed in the base body, and the solid lubricant is embedded in the holes or recesses,
The Mn-Si compound includes acicular Mn-Si compound particles having a major axis length of 50 µm or more, and 50% or more of the total number of acicular Mn-Si compounds is a plurality of small particles. A copper-based sliding member comprising:

2. The copper-based sliding member according to claim 1, wherein all of the needle-like Mn—Si-based compounds having a length of 50 μm or more in the copper alloy are composed of a plurality of small particles. .

The length of the small particles in the major axis direction is 70% or more of the total number of the small particles constituting the acicular Mn—Si based compound having a length in the major axis direction of 50 μm or more in the copper alloy. The copper-based sliding member according to claim 1 or 2, wherein the thickness is 45 µm or less.

The said copper alloy contains 3-50 volume% of acicular Mn-Si-type compounds whose length of the said major axis direction is 50 micrometers or more, The Claim 1 thru | or 3 characterized by the above-mentioned. Copper-based sliding member.

The copper alloy contains at least one selected from Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, and Sb in a total amount of 0.1 to 5% by mass,
The total amount of the Zn and at least one selected from the group consisting of Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, and Sb is 40% by mass or less. The copper-type sliding member in any one of Claims 1 thru | or 4.

The copper alloy contains at least one selected from Pb and Bi in a total amount of 0.1 to 5% by mass,
5. The copper-based sliding according to claim 1, wherein the total amount of the Zn and at least one selected from the group consisting of Pb and Bi is 40% by mass or less. Element.

The copper alloy is
0.1 to 5% by mass in total of at least one selected from Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, and Sb;
Containing at least one selected from Pb and Bi in a total amount of 0.1 to 5% by mass,
Total amount of Zn, at least one selected from Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Zr, Sb, and at least one selected from Pb, Bi The copper-based sliding member according to any one of claims 1 to 4, wherein is 40 mass% or less.