JPH08199328A - Sliding member - Google Patents
Sliding memberInfo
- Publication number
- JPH08199328A JPH08199328A JP886095A JP886095A JPH08199328A JP H08199328 A JPH08199328 A JP H08199328A JP 886095 A JP886095 A JP 886095A JP 886095 A JP886095 A JP 886095A JP H08199328 A JPH08199328 A JP H08199328A
- Authority
- JP
- Japan
- Prior art keywords
- sprayed layer
- copper alloy
- thermally sprayed
- matrix
- spraying
- 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
- 239000002245 particle Substances 0.000 claims abstract description 43
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 30
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 18
- 239000011701 zinc Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 5
- 238000010285 flame spraying Methods 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 abstract description 20
- 238000005260 corrosion Methods 0.000 abstract description 18
- 230000007797 corrosion Effects 0.000 abstract description 18
- 238000005507 spraying Methods 0.000 abstract description 17
- 239000000843 powder Substances 0.000 abstract description 10
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 8
- 238000001704 evaporation Methods 0.000 abstract description 6
- 230000008020 evaporation Effects 0.000 abstract description 5
- 230000013011 mating Effects 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000005486 sulfidation Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000007749 high velocity oxygen fuel spraying Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 239000012208 gear oil Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 229910001369 Brass Inorganic materials 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000007750 plasma spraying Methods 0.000 description 4
- 238000007751 thermal spraying Methods 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 230000016571 aggressive behavior Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は基材の摺動部表面に金属
溶射層を形成した摺動部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding member having a metal sprayed layer formed on the surface of a sliding portion of a base material.
【０００２】[0002]
【従来の技術】近年、自動車の高出力化および低燃費化
の要求から各種摺動部材、例えばシフトフォーク爪部、
シンクロナイザリング内面、シリンダライナ内面、ピス
トンリング、ミッション摩擦板等はより高面圧下で使用
されるようになってきた。このため、これら摺動部材の
摺動部表面に、より摺動特性の優れた材料をプラズマ溶
射等により溶射して、摺動特性を向上させる方法が広く
用いられている。2. Description of the Related Art In recent years, various sliding members, such as shift fork claws, have been demanded to meet the demand for higher output and lower fuel consumption of automobiles.
The inner surface of the synchronizer ring, the inner surface of the cylinder liner, the piston ring, the transmission friction plate, etc. have been used under higher surface pressure. Therefore, a method is widely used in which a material having more excellent sliding characteristics is sprayed on the surfaces of the sliding parts of these sliding members by plasma spraying or the like to improve the sliding characteristics.
【０００３】例えば、特開平４−８０９８３号公報に
は、基材の摺動部表面に２ないし３０重量％のモリブデ
ンと残部アルミニウム合金または銅合金とからなる溶射
層を設け、さらにこの溶射層の上に３０ないし９５重量
％のモリブデンと残部アルミニウム合金または銅合金と
からなる５μｍ以上の溶射層を設けた摺動部材の発明が
開示されている。For example, in Japanese Unexamined Patent Publication (Kokai) No. 4-80983, a sprayed layer made of 2 to 30% by weight of molybdenum and the balance aluminum alloy or copper alloy is provided on the surface of the sliding portion of the base material, and the sprayed layer is further formed. An invention of a sliding member having a sprayed layer of 5 μm or more composed of 30 to 95% by weight of molybdenum and the balance of aluminum alloy or copper alloy is disclosed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記摺
動部材においては、溶射層のマトリックスとしてアルミ
ニウム合金を使用した場合、アルミニウム合金は融点が
低いため、高面圧下ではマトリックスのアルミニウム合
金が溶損することがある。However, in the above sliding member, when an aluminum alloy is used as the matrix of the sprayed layer, the aluminum alloy has a low melting point, so that the aluminum alloy of the matrix may be melted under high surface pressure. There is.
【０００５】また、溶射層のマトリックスに銅合金を使
用した場合、例えば黄銅をプラズマ溶射すると、プラズ
マ熱源によって亜鉛が蒸発し、亜鉛量が減少し、ギヤ油
中で使用すると硫化腐食が発生する。そのため、マニュ
アルミッション中で使用されるシンクロナイザリング等
の摺動部には、ギヤ油中の硫黄分による硫化腐食を防止
することができず、このようなギヤ油中の部品には使用
できなかった。その上、モリブデンは非常に高コストで
ある。When a copper alloy is used for the matrix of the sprayed layer, for example, when brass is plasma sprayed, zinc is evaporated by the plasma heat source, the amount of zinc is reduced, and sulfide corrosion occurs when used in gear oil. Therefore, sliding parts such as synchronizer rings used in manual missions cannot prevent sulfide corrosion due to sulfur in gear oil, and cannot be used for parts in such gear oil. . Moreover, molybdenum is very expensive.
【０００６】本発明は従来の摺動部材、特に高面圧であ
って、かつギヤ油中で硫化腐食を受けるような摺動部材
の前記のごとき問題点を解決すべくなされたものであっ
て、硫化腐食がなく、耐焼付性に優れ、耐摩耗性と共に
相手攻撃性に優れた摺動部材を提供することを目的とす
る。The present invention has been made to solve the above-mentioned problems of conventional sliding members, particularly those having a high surface pressure and being subjected to sulfidation corrosion in gear oil. An object of the present invention is to provide a sliding member that is free from sulfide corrosion, has excellent seizure resistance, and has excellent wear resistance as well as opponent attack.
【０００７】[0007]
【課題を解決するための手段】高面圧下でのマトリック
スの溶損を回避するため、発明者は先ずマトリックスと
して銅合金を用いることを着想した。また、耐硫化腐食
性を確保するため、金属溶射の際の亜鉛の蒸発を防止す
る方策について、鋭意検討を重ねた。その結果、溶射の
熱源としてはフレーム溶射が適していること、および溶
射粒子を高速飛行できる高速酸素フレーム溶射を採用す
ることにより、亜鉛の蒸発が極力減少できることを新た
に知見して本発明を完成した。In order to avoid the erosion of the matrix under high surface pressure, the inventor first conceived to use a copper alloy as the matrix. In addition, in order to secure the sulfidation corrosion resistance, the inventors have earnestly studied a method for preventing evaporation of zinc during metal spraying. As a result, the present invention was completed by newly discovering that flame spraying is suitable as a heat source for spraying and that high-speed oxygen flame spraying capable of high-speed flight of sprayed particles can be adopted to reduce evaporation of zinc as much as possible. did.
【０００８】本発明の摺動部材は、基材の摺動部表面
に、少なくとも亜鉛を１５〜４５重量％を含有する銅合
金に５〜４０重量％の硬質粒子を混合し高速フレーム溶
射にて溶射層を形成したことを要旨とする。本発明にお
いて、銅合金には、Ａｌ、Ｍｎ、Ｆｅ、Ｓｉ、Ｔｉ、Ｃ
ｏ、Ｎｉから選ばれる１種または２種以上を含有したも
のを用いることができる。また、本発明において、硬質
粒子には平均粒径が５０μｍ以下のＦｅＭｏまたはＦｅ
Ｃｒを用いることができる。The sliding member of the present invention is prepared by high speed flame spraying by mixing 5 to 40% by weight of hard particles on a copper alloy surface containing at least 15 to 45% by weight of zinc on the surface of the sliding portion of the base material. The gist is that a sprayed layer is formed. In the present invention, the copper alloy includes Al, Mn, Fe, Si, Ti and C.
It is possible to use one containing at least one selected from o and Ni. In the present invention, the hard particles include FeMo or Fe having an average particle size of 50 μm or less.
Cr can be used.
【０００９】本発明の溶射層のマトリックスを形成する
銅合金は、銅に少なくとも１５〜４５重量％の亜鉛を固
溶した黄銅すなわち真鍮と称される銅合金であって、亜
鉛以外にアルミニウム、マンガン、鉄、ニッケル等を添
加して高強度を持たせて高力黄銅として用いても良い。The copper alloy forming the matrix of the sprayed layer of the present invention is a brass alloy in which at least 15 to 45% by weight of zinc is solid-dissolved in copper, that is, a brass alloy. Alternatively, iron, nickel, or the like may be added to provide high strength and used as high strength brass.
【００１０】溶射材料の調製としては、マトリックス材
料となる銅合金および硬質粒子の各粉末溶射材料（平均
粒径５０μｍ以下）を別個に溶射装置に供給し同時に溶
射させて目的とする溶射層を形成しても良いし、また、
溶射装置への供給の前にあらかじめマトリックス材料と
なる銅合金粉末と硬質粒子粉末を混合させた複合材料を
用いても良い。As the preparation of the thermal spray material, each powder thermal spray material (average particle diameter of 50 μm or less) of copper alloy and hard particles to be the matrix material is separately supplied to the thermal spraying apparatus and simultaneously sprayed to form a desired thermal spray layer. You can do it again
You may use the composite material which mixed the copper alloy powder and hard particle powder used as a matrix material in advance before supply to a thermal spraying apparatus.
【００１１】本発明においては、亜鉛の蒸発を回避する
ため熱源として酸素と燃焼ガスの混合ガスの燃焼炎を用
いるフレーム溶射方法を用いるが、通常のフレーム溶射
であると、溶射粒子の加速は燃焼炎で行われるため、飛
行速度が遅くその間に亜鉛が蒸発してしまうので、高速
酸素フレーム溶射（以下ＨＶＯＦという。）を用いる必
要がある。In the present invention, in order to avoid evaporation of zinc, a flame spraying method using a combustion flame of a mixed gas of oxygen and combustion gas as a heat source is used, but in the case of ordinary flame spraying, the acceleration of the sprayed particles is burned. Since it is performed with a flame, the flight speed is slow and zinc evaporates during that time, so it is necessary to use high-velocity oxygen flame spraying (hereinafter referred to as HVOF).
【００１２】ＨＶＯＦは爆発溶射の原理を応用して、連
続的に溶射皮膜を形成する方法であって、酸素とアセチ
レンガスとの混合による爆発燃焼部と銃身を分離するこ
とによって、間欠的な燃焼を連続的なジェットフレーム
に変換し、これに粉末を送給して溶射を行うものであ
る。ＨＶＯＦの溶射粒子の飛行速度は、プラズマ溶射の
１００〜１５０ｍ／ｓｅｃに対して、４００ｍ／ｓｅｃ
程度の飛行速度が得られる。The HVOF is a method for continuously forming a sprayed coating by applying the principle of explosive spraying. By separating the explosive combustion part by mixing oxygen and acetylene gas and the barrel, intermittent combustion is performed. Is converted into a continuous jet flame, and powder is fed to this for flame spraying. The flight speed of the HVOF sprayed particles is 400 m / sec compared to 100 to 150 m / sec of plasma spraying.
The flight speed of the degree is obtained.
【００１３】[0013]
【作用】本発明の摺動部材は摺動部表面に、少なくとも
亜鉛を１５〜４５重量％を含有する銅合金に５〜４０重
量％の硬質粒子を混合しＨＶＯＦにて溶射層を形成した
ので、溶射粒子が溶射ノズルから高速で飛行し、溶射層
のマトリックスを形成する銅合金の亜鉛の蒸発が極力防
止されるため、溶射前の銅合金粉末の組成が溶射層とほ
ぼ同じ組成か確保される。そのため、溶射層の耐硫化腐
食性が向上する。In the sliding member of the present invention, a copper alloy containing at least 15 to 45% by weight of zinc is mixed with 5 to 40% by weight of hard particles on the surface of the sliding portion to form a sprayed layer by HVOF. Since the sprayed particles fly at high speed from the spraying nozzle and the evaporation of zinc of the copper alloy forming the matrix of the sprayed layer is prevented as much as possible, it is ensured that the composition of the copper alloy powder before spraying is almost the same as that of the sprayed layer. It Therefore, the sulfidation corrosion resistance of the sprayed layer is improved.
【００１４】また、溶射層のマトリックスを形成する銅
合金は融点が９００〜１０００℃の範囲にあり、耐焼付
性に優れており、さらに本発明の溶射層はマトリックス
となる銅合金に硬質粒子を均一に分散させたので、耐摩
耗性および相手攻撃性に優れている。Further, the copper alloy forming the matrix of the sprayed layer has a melting point in the range of 900 to 1000 ° C. and is excellent in seizure resistance, and the sprayed layer of the present invention further comprises hard particles in the copper alloy serving as the matrix. Since it is evenly dispersed, it has excellent wear resistance and opponent attack.
【００１５】溶射層のマトリックスを構成する銅合金
に、さらにＡｌ、Ｍｎ、Ｆｅ、Ｓｉ、Ｔｉ、Ｃｏ、Ｎｉ
から選ばれる１種または２種以上を含有させることによ
り、溶射層のマトリックスの強度を向上し、高面圧下で
の耐焼付性がさらに向上する。また、硬質粒子に平均粒
径が５０μｍ以下のＦｅＭｏまたはＦｅＣｒを用いるこ
とにより、銅合金マトリックスとの単位体積当りの接触
面積が大きくなり、硬質粒子が脱落し難くなり、相手攻
撃性も小さくなる。In addition to the copper alloy constituting the matrix of the sprayed layer, Al, Mn, Fe, Si, Ti, Co, Ni
By incorporating one or more selected from the following, the strength of the matrix of the thermal sprayed layer is improved and the seizure resistance under high surface pressure is further improved. Further, by using FeMo or FeCr having an average particle diameter of 50 μm or less for the hard particles, the contact area per unit volume with the copper alloy matrix is increased, the hard particles are less likely to fall off, and the opponent attack property is also reduced.
【００１６】本発明において、銅合金の亜鉛含有量を１
５〜４５重量％としたのは、亜鉛含有量が１５％未満に
なると、耐硫化腐食性が充分でなくなるからであり、４
５％を越えるとβ層の析出により亜鉛の部分腐食が生
じ、却って耐硫化腐食性が劣化するからである。In the present invention, the zinc content of the copper alloy is 1
The reason why the content is 5 to 45% by weight is that when the zinc content is less than 15%, the sulfidation corrosion resistance becomes insufficient.
This is because if it exceeds 5%, partial corrosion of zinc occurs due to the precipitation of the β layer, which rather deteriorates the sulfidation corrosion resistance.
【００１７】また、本発明において、５〜４０重量％の
硬質粒子を混合したのは、硬質粒子の混合量が５％未満
であると、充分な耐摩耗性が得られないからであり、４
０％を越えると相手攻撃性が大きくなるからである。硬
質粒子であるＦｅＭｏまたはＦｅＣｒの平均粒径を５０
μｍ以下としたのは、平均粒径が５０μｍを越えると、
硬質粒子が均一に分散しなくなると共に硬質粒子が脱落
し易くなり、相手攻撃性が大きくなるからである。Further, in the present invention, 5 to 40% by weight of hard particles are mixed, because if the mixing amount of the hard particles is less than 5%, sufficient abrasion resistance cannot be obtained.
This is because if it exceeds 0%, the opponent's aggression becomes large. The average particle size of the hard particles FeMo or FeCr is 50
The reason why the particle size is less than or equal to μm is that when the average particle size exceeds 50 μm,
This is because the hard particles are not evenly dispersed, and the hard particles are likely to drop off, which increases the opponent attacking property.
【００１８】本発明において摺動部表面に形成される溶
射層の厚さは６０μｍ以上とすることが好ましい。溶射
層の厚さが６０μｍ未満となると、平均粒径５０μｍの
硬質粒子が表面に突出し、相手攻撃性が大きくなるから
である。In the present invention, the thickness of the sprayed layer formed on the surface of the sliding portion is preferably 60 μm or more. This is because when the thickness of the sprayed layer is less than 60 μm, hard particles having an average particle size of 50 μm project on the surface and the opponent attacking property is increased.
【００１９】[0019]
【実施例】本発明の実施例を従来例および比較例と対比
して説明し、本発明の効果を明らかにする。表１および
表２に示す組成の平均粒径３８μｍの銅合金粉末に、表
１および表２に示す平均粒径であって表１および表２に
示す材質の硬質粒子を表１および表２に示す混合比で混
合し、溶射粉末を調製した。この溶射粉末を用い、試験
片として外径３５ｍｍの円柱状のロータ（材質ＳＳ４
１）の外周表面に、表１および表２に示す溶射方法によ
り、１００μｍの厚さの溶射層を形成した。EXAMPLES Examples of the present invention will be described in comparison with conventional examples and comparative examples to clarify the effects of the present invention. In the copper alloy powder having the composition shown in Tables 1 and 2 and having an average particle size of 38 μm, the hard particles having the average particle size shown in Tables 1 and 2 and the materials shown in Tables 1 and 2 are shown in Tables 1 and 2. Mixing was carried out at the mixing ratio shown to prepare a sprayed powder. Using this sprayed powder, a cylindrical rotor (material SS4) having an outer diameter of 35 mm was used as a test piece.
A thermal sprayed layer having a thickness of 100 μm was formed on the outer peripheral surface of 1) by the thermal spraying method shown in Tables 1 and 2.
【００２０】なお、表１に示す溶射方法のうちプラズマ
溶射は、予熱なし、溶射距離１００ｍｍで、ミラー社製
ＳＧ１００溶射機を用い、溶射ガスはアルゴンで行っ
た。また、表１および表２に示すＨＶＯＦ溶射は、ミラ
ー社製ＨＶ２０００溶射装置を用い、予熱なし、溶射距
離１００ｍｍで、溶射ガスにはアセチレンと酸素を用い
て行った。Plasma spraying among the spraying methods shown in Table 1 was performed without preheating, with a spraying distance of 100 mm, using an SG100 sprayer manufactured by Miller Co., and using argon as a spraying gas. Further, the HVOF spraying shown in Tables 1 and 2 was carried out using an HV2000 spraying apparatus manufactured by Miller Co., without preheating, at a spraying distance of 100 mm, and using acetylene and oxygen as spraying gases.
【００２１】なお、表１および表２に示した実施例の試
験片のうち、Ｎｏ．１〜４は溶射方法がプラズマ溶射で
ある比較例であり、Ｎｏ．８は硬質粒子の配合量が本発
明の配合量より少ない比較例であり、Ｎｏ．１４は硬質
粒子の平均粒径が５０μｍ以上である比較例であって、
その他のＮｏ．５〜７、Ｎｏ．９〜１３およびＮｏ．１
５〜１８は本発明品である。Of the test pieces of the examples shown in Tables 1 and 2, No. Nos. 1 to 4 are comparative examples in which the thermal spraying method is plasma spraying. No. 8 is a comparative example in which the content of hard particles is smaller than that of the present invention, and No. 8 is used. 14 is a comparative example in which the average particle diameter of the hard particles is 50 μm or more,
Other No. 5-7, No. 9-13 and No. 1
5 to 18 are products of the present invention.
【００２２】[0022]
【表１】 [Table 1]
【００２３】[0023]
【表２】 [Table 2]
【００２４】（実施例１）表１および表２で得られた各
々の試験片の溶射層について硫化腐食試験を行った。硫
化試験方法は、溶射層をマニュアルトランスミッション
用ギヤ油７５Ｗ−９０に浸漬し、１５０℃で１０時間保
持したのち、腐食の有り無しを断面の表面部に腐食した
部分が認められるかどうかで判定し、得られた結果を表
１および表２に併せて示した。Example 1 A sulfidation corrosion test was performed on the sprayed layers of the test pieces obtained in Table 1 and Table 2. The sulfidation test method was performed by immersing the sprayed layer in gear oil 75W-90 for manual transmission and holding it at 150 ° C for 10 hours, and then judging whether there was corrosion or not by observing the corroded portion on the surface of the cross section. The obtained results are also shown in Tables 1 and 2.
【００２５】表１および表２の硫化腐食結果の欄に示し
たように、プラズマ溶射を行ったＮｏ．１〜４の比較例
には総て硫化腐食が認められたが、ＨＶＯＦ溶射を行っ
たＮｏ．５〜１８には硫化腐食が全く認められず、本発
明においてＨＶＯＦ溶射を行うことにより、硫化腐食が
防止できることが確認された。As shown in the columns of the results of sulfidation corrosion in Tables 1 and 2, No. Sulfuric acid corrosion was observed in all of the comparative examples 1 to 4, but HVOF sprayed No. No sulfide corrosion was observed in Nos. 5 to 18, and it was confirmed that sulfide corrosion can be prevented by performing HVOF spraying in the present invention.
【００２６】（実施例２）次に、表１および表２で得ら
れた試験片について、摩擦摩耗試験を行った。摩耗摩擦
試験は、相手材として、ＳＣＭ４１５の浸炭焼入材で表
面を十点平均粗さで３．２Ｚに研磨仕上げした平板を用
意し、表１および表２の溶射層を形成した試験片Ｎｏ．
５〜１８の外周の溶射被膜面を相手材に面圧１ｋｇ／ｍ
ｍ2で回転させながら押し付け、すべり速度３ｍ／秒、
すべり距離１００ｍの試験条件で行い、摩耗量は重量変
化で測定した。得られた結果は図１に示した。Example 2 Next, the test pieces obtained in Tables 1 and 2 were subjected to a friction and wear test. In the wear friction test, as a mating material, a flat plate whose surface was polished to 3.2Z with a ten-point average roughness of a carburized and quenched material of SCM415 was prepared, and a test piece No. having a sprayed layer of Table 1 and Table 2 was prepared. ．
Surface pressure of 1 to 5 kg / m with the outer peripheral surface of 5-18 against the mating material
Pressing while rotating at m 2 , sliding speed 3 m / sec,
The sliding amount was 100 m, and the amount of wear was measured by the change in weight. The obtained results are shown in FIG.
【００２７】図１から明らかなように、比較例Ｎｏ．８
は硬質粒子含有量がが３％であって耐摩耗性に劣り、溶
射層の摩耗量が１８ｍｇであって、本発明品の溶射層の
摩耗量と比較して３〜８倍であった。また、比較例Ｎ
ｏ．１４は硬質粒子の平均粒径が６０μｍと大きかった
ため、相手攻撃性が大きく、相手材の摩耗量が１４ｍｇ
であって、本発明品の相手攻撃性に対して２．５〜３倍
であった。As is apparent from FIG. 1, Comparative Example No. 8
Had a hard particle content of 3% and poor wear resistance, and the wear amount of the sprayed layer was 18 mg, which was 3 to 8 times the wear amount of the sprayed layer of the present invention. In addition, Comparative Example N
o. In No. 14, the average particle diameter of the hard particles was as large as 60 μm, so the opponent's aggression was large and the amount of wear of the opponent material was 14 mg.
It was 2.5 to 3 times the aggression against the opponent of the product of the present invention.
【００２８】これに対して、本発明品のＮｏ．５〜７、
Ｎｏ．９〜１３およびＮｏ．１５〜１８は溶射層の摩耗
量が２〜６ｍｇであり、相手材の摩耗量も４〜７ｍｇで
あって、本発明品は耐摩耗性に優れると共に相手攻撃性
も少ないことが判明し、本発明の効果を確認することが
できた。On the other hand, the product of the present invention No. 5-7,
No. 9-13 and No. In Nos. 15 to 18, the wear amount of the sprayed layer was 2 to 6 mg, and the wear amount of the mating material was 4 to 7 mg, and it was found that the product of the present invention has excellent wear resistance and little opponent attacking property. The effect of the invention could be confirmed.
【００２９】[0029]
【発明の効果】本発明の摺動部材は以上詳述したよう
に、基材の摺動部表面に、少なくとも亜鉛を１５〜４５
重量％を含有する銅合金に５〜４０重量％の平均粒径が
５０μｍ以下のＦｅＭｏまたはＦｅＣｒからなる硬質粒
子を混合し高速酸素フレーム溶射にて溶射層を形成した
ものであって、溶射粒子が溶射ノズルから高速で飛行
し、溶射層のマトリックスを形成する銅合金の亜鉛の蒸
発が極力防止されるため、溶射前の銅合金粉末の組成が
溶射層とほぼ同じ組成か確保され、溶射層の耐硫化腐食
性が向上する。また、溶射層のマトリックスを形成する
銅合金は融点が９００〜１０００℃の範囲にあり、耐焼
付性に優れており、さらに本発明の溶射層はマトリック
スとなる銅合金に硬質粒子を均一に分散させたので、耐
摩耗性および相手攻撃性に優れている。As described above in detail, the sliding member of the present invention contains at least 15 to 45 zinc on the surface of the sliding portion of the base material.
A hard alloy composed of FeMo or FeCr having an average particle size of 5 to 40% by weight and having an average particle size of 50 μm or less is mixed with a copper alloy containing 1% by weight to form a thermal spray layer by high-velocity oxygen flame spraying. Since the zinc of the copper alloy that forms the matrix of the sprayed layer is prevented from evaporating as much as possible by flying from the spray nozzle at a high speed, the composition of the copper alloy powder before spraying is ensured to be almost the same as that of the sprayed layer. Sulfide corrosion resistance is improved. Further, the copper alloy forming the matrix of the sprayed layer has a melting point in the range of 900 to 1000 ° C. and is excellent in seizure resistance, and the sprayed layer of the present invention further disperses hard particles uniformly in the copper alloy serving as the matrix. As a result, it has excellent wear resistance and opponent attacking property.
【図１】摩擦摩耗試験の結果を示す棒グラフである。FIG. 1 is a bar graph showing the results of a friction and wear test.
Claims (3)
１５〜４５重量％を含有する銅合金に５〜４０重量％の
硬質粒子を混合し高速酸素フレーム溶射にて溶射層を形
成したことを特徴とする摺動部材。1. A thermally sprayed layer is formed on the surface of a sliding portion of a base material by mixing 5 to 40% by weight of hard particles with a copper alloy containing at least 15 to 45% by weight of zinc by high-speed oxygen flame spraying. A sliding member characterized by the above.
ｉ、Ｔｉ、Ｃｏ、Ｎｉから選ばれる１種または２種以上
を含有することを特徴とする請求項１に記載の摺動部
材。2. The copper alloy is Al, Mn, Fe, S
The sliding member according to claim 1, which contains one or more selected from i, Ti, Co, and Ni.
のＦｅＭｏまたはＦｅＣｒであることを特徴とする請求
項１または請求項２に記載の摺動部材。3. The sliding member according to claim 1, wherein the hard particles are FeMo or FeCr having an average particle diameter of 50 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00886095A JP3244394B2 (en) | 1995-01-24 | 1995-01-24 | Sliding member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00886095A JP3244394B2 (en) | 1995-01-24 | 1995-01-24 | Sliding member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08199328A true JPH08199328A (en) | 1996-08-06 |
| JP3244394B2 JP3244394B2 (en) | 2002-01-07 |
Family
ID=11704466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00886095A Expired - Fee Related JP3244394B2 (en) | 1995-01-24 | 1995-01-24 | Sliding member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3244394B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006169570A (en) * | 2004-12-14 | 2006-06-29 | Nissan Motor Co Ltd | High friction generator |
| WO2015118924A1 (en) * | 2014-02-10 | 2015-08-13 | 日産自動車株式会社 | Sliding mechanism |
-
1995
- 1995-01-24 JP JP00886095A patent/JP3244394B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006169570A (en) * | 2004-12-14 | 2006-06-29 | Nissan Motor Co Ltd | High friction generator |
| WO2015118924A1 (en) * | 2014-02-10 | 2015-08-13 | 日産自動車株式会社 | Sliding mechanism |
| CN105940127A (en) * | 2014-02-10 | 2016-09-14 | 日产自动车株式会社 | Sliding mechanism |
| US10590812B2 (en) | 2014-02-10 | 2020-03-17 | Nissan Motor Co., Ltd. | Sliding mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3244394B2 (en) | 2002-01-07 |
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