JPS6342337A - Sliding member - Google Patents
Sliding memberInfo
- Publication number
- JPS6342337A JPS6342337A JP18626486A JP18626486A JPS6342337A JP S6342337 A JPS6342337 A JP S6342337A JP 18626486 A JP18626486 A JP 18626486A JP 18626486 A JP18626486 A JP 18626486A JP S6342337 A JPS6342337 A JP S6342337A
- Authority
- JP
- Japan
- Prior art keywords
- sliding
- composite material
- particles
- metal
- sliding member
- 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 91
- 239000000835 fiber Substances 0.000 claims abstract description 62
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 42
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 36
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 32
- 239000011159 matrix material Substances 0.000 claims abstract description 26
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 14
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 239000002905 metal composite material Substances 0.000 claims description 44
- 230000003746 surface roughness Effects 0.000 claims description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract description 29
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 25
- 239000006185 dispersion Substances 0.000 abstract description 24
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 abstract description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052593 corundum Inorganic materials 0.000 abstract description 5
- 238000007751 thermal spraying Methods 0.000 abstract description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 5
- 229910052681 coesite Inorganic materials 0.000 abstract 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract 3
- 229910052682 stishovite Inorganic materials 0.000 abstract 3
- 229910052905 tridymite Inorganic materials 0.000 abstract 3
- 239000007769 metal material Substances 0.000 abstract 2
- 239000003733 fiber-reinforced composite Substances 0.000 abstract 1
- 239000012779 reinforcing material Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 133
- 229910001141 Ductile iron Inorganic materials 0.000 description 16
- 238000005266 casting Methods 0.000 description 7
- 238000000866 electrolytic etching Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000007750 plasma spraying Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 101100002675 Arabidopsis thaliana ADT4 gene Proteins 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- -1 JIS standard 5UJ2) Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、互いに当接して相対的に摺動する第一の部材
と第二の部材とよりなる摺動用部材に係り、更に詳細に
は第一の部材がアルミナーシリカル繊維にて複合強化さ
れたアルミニウム合金若しくはマグネシウム合金よりな
る複合材料にて構成され、第二の部材が金属酸化物粒子
分散強化金属複合材料の溶射層にて被覆された金属にて
構成された摺動用部材に係る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sliding member consisting of a first member and a second member that are in contact with each other and slide relative to each other. The second member is made of a composite material made of aluminum alloy or magnesium alloy reinforced with alumina-silica fibers, and the second member is a metal coated with a sprayed layer of a metal composite material dispersed in metal oxide particles. This relates to a sliding member constructed of.
従来の技術
互いに当接して相対的に摺動する二つの部材よりなる摺
動用部材に於ては、二つの部材の組合せ如何によっては
それらの部材の何れが又は両方の摩耗量が大きくなり、
早期寿命を来たすことがある。かかる問題に対処すべく
、例えば本願出願人と同一の出願人の出願にががる特開
昭58−93838号や特開昭58−93839号の公
報には、アルミニウム合金やマグネシウム合金をマトリ
ックスとしアルミナ−シリカ繊維の如き無機繊維を強化
繊維とする繊維強化金属複合材料にて一方の部材を構成
し、所定の硬さの鋼にて他方の部材を構成し、これによ
り摺動用部材の摩擦摺動特性を改善する試みが行われて
いる。BACKGROUND OF THE INVENTION In a sliding member made of two members that come into contact with each other and slide relative to each other, depending on the combination of the two members, the amount of wear of one or both of those members becomes large.
May cause premature end of life. In order to deal with this problem, for example, Japanese Patent Application Laid-open No. 58-93838 and Japanese Patent Application Laid-open No. 58-93839 filed by the same applicant as the present applicant disclose that aluminum alloys or magnesium alloys are used as a matrix. One member is made of a fiber-reinforced metal composite material reinforced with inorganic fibers such as alumina-silica fibers, and the other member is made of steel of a predetermined hardness. Attempts are being made to improve the dynamic characteristics.
発明が解決しようとする問題点
しかし互いに当接して相対的に摺動する二つの部材より
なる摺動用部材に於て、その一方の部材を繊維強化金属
複合材料にて構成した場合には、その他方の部材の材質
によってはその他方の部材の摩耗が増大し、またそれら
の部材の間に於て焼付き等の問題が生じることがある。Problems to be Solved by the Invention However, in a sliding member consisting of two members that come into contact with each other and slide relative to each other, if one of the members is made of a fiber-reinforced metal composite material, the other Depending on the material of one member, wear of the other member may increase, and problems such as seizure may occur between these members.
本願発明者等は、互いに当接して相対的に摺動する第一
の部材と第二の部材とよりなる摺動用部材に於て、第一
の部材がアルミナーシリカル繊維を強化繊維とする複合
材料にて構成され、第二の部材が金属にて構成される場
合に、第二の部材を構成する金属が如何なる特徴を有す
るものであることが適切であるかについて種々の実験的
研究を行った結果、金属が成る特定の粒子分散強化金属
複合材料の溶射層にて被覆されていることが好ましいこ
とを見出した。The inventors of the present application have proposed a sliding member consisting of a first member and a second member that are in contact with each other and slide relative to each other, in which the first member is a composite material in which the reinforcing fiber is alumina-silica fiber. When the second member is made of metal and the second member is made of metal, various experimental studies have been conducted to find out what characteristics the metal that makes up the second member should have. As a result, it was found that it is preferable to coat with a sprayed layer of a specific particle-dispersed reinforced metal composite material made of metal.
本発明は、本願発明者等が行った種々の実験的研究の結
果得られた知見に基づき、互いに当接して相対的に摺動
する第一の部材と第二の部材とよりなる摺動用部材であ
って、第一の部材がアルミナーシリカル繊維を強化繊維
としアルミニウム合金若しくはマグネシウム合金をマト
リックスとする繊維強化金属複合材料にて構成され、第
二の部材が成る特定の粒子分散強化金属複合材料の溶射
層にて被覆された金属にて構成され、それらの両部材の
耐摩耗性及び耐焼付き性等に優れた摺動用部材を提供す
ることを目的としている。The present invention is based on the knowledge obtained as a result of various experimental studies conducted by the inventors of the present invention, and provides a sliding member comprising a first member and a second member that are in contact with each other and slide relative to each other. A specific particle-dispersion-reinforced metal composite material in which the first member is made of a fiber-reinforced metal composite material with alumina-silica fibers as reinforcing fibers and an aluminum alloy or magnesium alloy as a matrix, and the second member is made of a particle-dispersion-reinforced metal composite material. The object of the present invention is to provide a sliding member which is made of a metal coated with a thermally sprayed layer, and which has excellent wear resistance and seizure resistance.
問題点を解決するための手段
上述の如き目的は、本発明によれば、互いに当接して相
対的に摺動する第一の部材と第二の部材とよりなる摺動
用部材にして、前記第一の部材の少なくとも前記第二の
部材に対する摺動面部は40vt%以上AI 203
、残部実質的にsIo!!なる組成を有する体積率3〜
30%のアルミナーシリカル繊維を強化繊維としアルミ
ニウム合金若しくはマグネシウム合金をマトリックスと
する繊維強化金属複合材料にて構成され、前記第二の部
材の少なくとも前記第一の部材に対する摺動面部はHv
800以上の硬さを有する体積率25〜85%の金属酸
化物粒子を強化材とし鉄、ニッケル、及びそれらを主成
分とする合金よりなる群より選択された金属をマトリッ
クスとする粒子分散強化金属複合材料の溶射層にて被覆
された金属にて構成された摺動用部材によって達成され
る。Means for Solving the Problems According to the present invention, the above-mentioned object is achieved by providing a sliding member consisting of a first member and a second member that abut each other and slide relative to each other; The sliding surface portion of one member relative to at least the second member has an AI of 40vt% or more AI 203
, the rest is essentially sIo! ! Volume fraction 3~
It is made of a fiber-reinforced metal composite material with 30% alumina-silica fibers as reinforcing fibers and an aluminum alloy or magnesium alloy as a matrix, and at least the sliding surface portion of the second member relative to the first member has Hv.
A particle dispersion reinforced metal whose reinforcement is metal oxide particles having a hardness of 800 or higher and a volume fraction of 25 to 85%, and whose matrix is a metal selected from the group consisting of iron, nickel, and alloys containing these as main components. This is accomplished by a sliding member made of metal coated with a sprayed layer of composite material.
発明の作用及び効果
本発明によれば、第一の部材の少なくとも第二の部材に
対する摺動面部は、体積率3〜30%のアルミナーシリ
カル繊維を強化繊維としアルミニウム合金若しくはマグ
ネシウム合金をマトリックスとする繊維強化金属複合材
料にて構成され、第二の部材の少なくとも第一の部材に
対する摺動面部は、Hv800以上の硬さを有する体積
率25〜85%の金属酸化物粒子を強化材とし鉄、ニッ
ケル、及びそれらを主成分とする合金よりなる群より選
択された金属をマトリックスとする粒子分散強化金属複
合材料の摺動特性に優れた溶射層にて被覆された金属に
て構成されるので、後に説明する本願発明者等が行った
実験的研究の結果より明らかである如く、二つの部材の
耐摩耗性及び耐焼付き性に優れた摺動用部材を得ること
ができる。Effects and Effects of the Invention According to the present invention, the sliding surface of the first member relative to at least the second member is reinforced with alumina-silica fibers having a volume ratio of 3 to 30%, and an aluminum alloy or a magnesium alloy is used as a matrix. The sliding surface of the second member relative to at least the first member is made of iron reinforced with metal oxide particles having a volume ratio of 25 to 85% and having a hardness of Hv800 or more. It is made of metal coated with a thermal sprayed layer with excellent sliding properties of a particle dispersion strengthened metal composite material whose matrix is a metal selected from the group consisting of nickel, nickel, and alloys containing these as main components. As is clear from the results of experimental research conducted by the inventors of the present application, which will be described later, it is possible to obtain a sliding member with excellent wear resistance and seizure resistance of the two members.
本願発明者等が行った実験的研究の結果によれば、金属
酸化物粒子分散強化金属複合材料は上述の如き繊維強化
金属複合材料と組合せて摺動用部材を構成するに適した
材料であるが、使用される金属酸化物粒子の硬さがHv
800未満である場合には、溶射層の耐摩耗性が不十分
となり、その結果第二の部材の摩耗量が増大する。従っ
て本発明に於ては、Hv800以上の硬さを有する金属
酸化物粒子、特にCr2O3粒子、T i O!!粒子
、ZrO2粒子、All!03粒子、及びこれらの二種
以上の粒子の混合物よりなる群より選択された粒子が使
用される。尚金属酸化物粒子の硬さが非常に高い値であ
る場合には、溶射層の相手攻撃性が増大して第一の部材
の摩耗量が増大することが考えられるので、金属酸化物
粒子の硬さはHv2500以下程度であることが好まし
いものと考えられる。According to the results of experimental research conducted by the inventors of the present application, metal oxide particle dispersion-reinforced metal composite materials are materials suitable for constructing sliding members in combination with the above-mentioned fiber-reinforced metal composite materials. , the hardness of the metal oxide particles used is Hv
If it is less than 800, the wear resistance of the sprayed layer will be insufficient, and as a result, the amount of wear on the second member will increase. Therefore, in the present invention, metal oxide particles having a hardness of Hv800 or more, particularly Cr2O3 particles, T i O! ! Particles, ZrO2 particles, All! Particles selected from the group consisting of 03 particles and mixtures of two or more of these particles are used. If the hardness of the metal oxide particles is extremely high, the aggressiveness of the sprayed layer may increase and the amount of wear on the first member will increase. It is considered that the hardness is preferably about Hv2500 or less.
また本願発明者等が行った実験的研究の結果によれば、
溶射層を構成する粒子分散強化金属複合材料の金属酸化
物粒子の体積率が小さい値である場合には、溶射層の耐
摩耗性を十分な値に確保することができず、逆に金属酸
化物粒子の体積率が高い値である場合には、溶射層の相
手攻撃性が増大して第一の部材の摩耗量が高い値になっ
てしまう。従って本発明に於ては、粒子分散強化金属複
合材料の金属酸化物粒子の体積率は25〜8596、好
ましくは30〜80%に設定される。Also, according to the results of experimental research conducted by the inventors of the present application,
If the volume fraction of metal oxide particles in the particle dispersion-strengthened metal composite material constituting the sprayed layer is small, the wear resistance of the sprayed layer cannot be ensured to a sufficient value, and conversely, the metal oxide particles When the volume fraction of the particles is a high value, the aggressiveness of the sprayed layer increases and the amount of wear of the first member becomes a high value. Therefore, in the present invention, the volume fraction of metal oxide particles in the particle dispersion-strengthened metal composite material is set to 25 to 8,596%, preferably 30 to 80%.
また金属酸化物粒子の大きさが大き過ぎる場合には、第
一の部材に異常摩耗が生じたり、粒子の脱落に起因して
第一の部材の摩耗量が過大になり、逆に金属酸化物粒子
の大きさが小さ過ぎる場合には、溶射層の耐摩耗性を十
分に向上させることが困難であり、また溶射により第二
の部材の表面に粒子分散強化金属複合材料の溶射層を形
成する際に非常に微細な金属酸化物粒子が使用されると
、金属酸化物粒子がマトリックス中に溶は込んでしまい
、溶射層を構成する材料が適正な粒子分散強化金属複合
材料ではなくなってしまう。従って本発明に於ては、溶
射前の金属酸化物粒子の大きさは5〜100μ、特に1
0〜60μ程度であることが好ましく、溶射層中の金属
酸化物粒子の大きさは2〜50μ、特に5〜20μ程度
であることが好ましい。Furthermore, if the size of the metal oxide particles is too large, abnormal wear may occur on the first member, or the amount of wear on the first member may become excessive due to particles falling off. If the size of the particles is too small, it is difficult to sufficiently improve the wear resistance of the sprayed layer, and it is also difficult to form a sprayed layer of particle dispersion reinforced metal composite material on the surface of the second member by thermal spraying. If very fine metal oxide particles are used, the metal oxide particles will melt into the matrix and the material constituting the sprayed layer will no longer be a suitable particle dispersion reinforced metal composite material. Therefore, in the present invention, the size of the metal oxide particles before thermal spraying is 5 to 100μ, especially 1
The size of the metal oxide particles in the sprayed layer is preferably about 0 to 60 μm, and the size of the metal oxide particles in the sprayed layer is preferably about 2 to 50 μm, particularly about 5 to 20 μm.
また本願発明者等が行った実験的研究の結果によれば、
第二の部材の摺動面部が上述の如き粒子分散強化金属複
合材料の溶射層にて被覆された金属にて構成される場合
には、溶射層の表面の粗さが比較的大きい場合にも、第
二の部材が溶射層にて被覆されていない金属にて構成さ
れる場合に比して、第−及び第二の部材の摩耗量を低減
することができるが、溶射層の表面粗さが特に1.2μ
Rz以下の場合に二つの部材の摩耗量を小さい値に抑え
ることができる。従って本発明の他の一つの詳細な特徴
によれば、溶射層の表面粗さは1゜2μRz以下に設定
される。Also, according to the results of experimental research conducted by the inventors of the present application,
When the sliding surface of the second member is made of metal coated with a sprayed layer of particle dispersion reinforced metal composite material as described above, even if the surface roughness of the sprayed layer is relatively large, , the amount of wear of the first and second members can be reduced compared to the case where the second member is made of metal that is not coated with the sprayed layer, but the surface roughness of the sprayed layer is especially 1.2μ
When Rz or less, the amount of wear of the two members can be suppressed to a small value. According to another detailed feature of the invention, therefore, the surface roughness of the sprayed layer is set to less than 1°2 μRz.
また本願発明者等が行った実験的研究の結果によれば、
第一の部材の摺動面が電解エツチングされることにより
アルミナーシリカル繊維の一部が摺動面に露出し、摺動
面に露出するアルミナーシリカル繊維の間のマトリック
スの表面に凹部が形成される場合には、第−及び第二の
部材の耐摩耗性及び耐焼付き性を更に一層向上させるこ
とができる。従って本発明の更に他の一つの詳細な特徴
によれば、第一の部材はその摺動面が電解エツチングさ
れることによりアルミナーシリカル繊維の一部が摺動面
に露出しており、摺動面に露出するアルミナーシリカル
繊維の間のマトリックスの表面に凹部が形成された状態
にて使用される。Also, according to the results of experimental research conducted by the inventors of the present application,
By electrolytically etching the sliding surface of the first member, a part of the alumina-silica fibers are exposed on the sliding surface, and a recess is formed on the surface of the matrix between the alumina-silica fibers exposed on the sliding surface. In this case, the wear resistance and seizure resistance of the first and second members can be further improved. Therefore, according to yet another detailed feature of the present invention, the sliding surface of the first member is electrolytically etched so that a part of the alumina silica fiber is exposed on the sliding surface. It is used with depressions formed on the surface of the matrix between the alumina-silica fibers exposed to the moving surface.
また粒子分散強化金属複合材料の溶射層の厚さが小さす
ぎる場合には、摩耗により該溶射層がなくなって第二の
部材の金属が露出してしまい、逆に溶射層の厚さが大き
すぎる場合には、溶射に要する時間が長くなり、また粒
子分散強化金属複合材料が必要以上に使用されることに
なり、摺動用部材が高コストになる。従って粒子分散強
化金属複合材料の溶射層の厚さは5μ以上、特に5〜2
00μ、更には10〜150μであることが好ましい。Furthermore, if the thickness of the sprayed layer of the particle dispersion reinforced metal composite material is too small, the sprayed layer will disappear due to wear and the metal of the second member will be exposed, and conversely, the thickness of the sprayed layer will be too large. In this case, the time required for thermal spraying becomes longer, more particle dispersion reinforced metal composite material is used than necessary, and the cost of the sliding member increases. Therefore, the thickness of the sprayed layer of the particle dispersion-strengthened metal composite material should be 5 μ or more, especially 5 to 2
00μ, more preferably 10 to 150μ.
本発明の一つの具体的実施例に於ては、摺動用部−材は
内燃機関であり、第一の部材はシリンダライナであり、
第二の部材はピストンリングである。In one specific embodiment of the invention, the sliding member is an internal combustion engine, the first member is a cylinder liner,
The second member is the piston ring.
また本発明の他の一つの具体的実施例に於ては、摺動用
部材は内燃機関であり、第一の部材はピストンであり、
第二の部材はピストンリングである。In another specific embodiment of the present invention, the sliding member is an internal combustion engine, the first member is a piston,
The second member is the piston ring.
内筒−の部材の複合材料の強化繊維としてのアルミナー
シリカル繊維、即ちAl2O3及び5t02を主成分と
する繊維のAl2O3含有量が40wt%未満の場合に
は、複合材料の耐摩耗性を十分に向上させることができ
ない。従って本発明に於てはAI 203含有量が40
wt%以上のアルミナーシリカル繊維が使用される。こ
のアルミナーシリカル繊維は長繊維又は短繊維の何れで
あってもよく、平均繊維径は100μ以下、特に1〜4
0μ程度であることが好ましい。When the Al2O3 content of the alumina-silica fibers as reinforcing fibers of the composite material of the inner cylinder member, that is, the fibers mainly composed of Al2O3 and 5t02, is less than 40 wt%, the wear resistance of the composite material cannot be sufficiently improved. cannot be improved. Therefore, in the present invention, the AI 203 content is 40
wt% or more of alumina silica fiber is used. The alumina silica fibers may be either long fibers or short fibers, and have an average fiber diameter of 100 μm or less, particularly 1 to 4 μm.
It is preferable that it is about 0μ.
またアルミナーシリカル繊維の体積率が5%未満、特に
3%未満の場合には、繊維強化金属複合材料の耐摩耗性
等を十分に向上させることができず、逆にアルミナーシ
リカル繊維の体積率が15%、特に30%を越えると、
繊維強化金属複合材料及び第二の部材の摩耗量が増大す
る。従ってアルミナーシリカル繊維の体積率は3〜30
%、好ましくは3〜15%に設定される。更にアルミナ
ーシリカル繊維の配向は一方向配向、二次元ランダム配
向、三次元ランダム配同等任意の配向であってよいが、
特に一方向配向及二次元ランダム配向の場合には、摺動
面が一方向配向の方向又は二次元ランダム配向平面に対
しできるだけ垂直又はこれに近い角度をなすよう設定さ
れることが好ましい。Furthermore, if the volume percentage of the alumina-silica fiber is less than 5%, especially less than 3%, the wear resistance of the fiber-reinforced metal composite material cannot be sufficiently improved; When the rate exceeds 15%, especially 30%,
The amount of wear on the fiber reinforced metal composite material and the second member increases. Therefore, the volume fraction of alumina silica fiber is 3 to 30
%, preferably 3 to 15%. Furthermore, the orientation of the alumina silica fibers may be any orientation such as unidirectional orientation, two-dimensional random orientation, three-dimensional random orientation, etc.
In particular, in the case of unidirectional orientation and two-dimensional random orientation, it is preferable that the sliding surface is set to be as perpendicular to the unidirectional orientation or the two-dimensional random orientation plane as possible, or at an angle close to this.
また第二の部材の溶射層の金属酸化物粒子分散強化金属
複合材料のマトリックスとしてのFeを主成分とする合
金及びNiを主成分とする合金は、炭素鋼(例えばJI
S規格SWRMI〜4)、低合金鋼(例えばJIS規格
5UJ2)、ステンレス鋼(例えばJIS規格5US3
04) 、Ni−Cr合金、N1自溶合金(例えば72
%N1−3%B−4%S l−20%Co)の如き任意
のFe合金及びNi合金であってよい。Further, the alloy mainly composed of Fe and the alloy mainly composed of Ni as the matrix of the metal oxide particle dispersion strengthened metal composite material of the sprayed layer of the second member are carbon steel (for example, JI
S standard SWRMI~4), low alloy steel (e.g. JIS standard 5UJ2), stainless steel (e.g. JIS standard 5US3)
04), Ni-Cr alloy, N1 self-fluxing alloy (e.g. 72
%N1-3%B-4%S1-20%Co).
更に第二の部材を構成する金属は上述の粒子分散強化金
属複合材料にて溶射により被覆し得る金属である限り任
意の金属であってよい。Furthermore, the metal constituting the second member may be any metal as long as it can be coated with the above-mentioned particle dispersion reinforced metal composite material by thermal spraying.
以下に添付の図を参照しつつ、本発明を実施例について
詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention will be explained in detail below by way of example embodiments with reference to the accompanying figures.
実施例1
互いに当接して相対的に摺動する二つの部材よりなる摺
動用部材であって、その一方の部材がアルミナ−シリカ
繊維を強化繊維としアルミニウム合金をマトリック、ス
とする繊維強化金属複合材料にて構成されており、その
他方の部材が粒子分散強化金属複合材料の溶射層にて被
覆された金属にて構成された摺動用部材について行われ
た摩耗試験及び焼付き試験を、他の材質の組合せよりな
る摺動用部材について行われた摩耗試験及び焼付き試験
と対比して説明する。Example 1 A sliding member consisting of two members that come into contact with each other and slide relative to each other, one of which is a fiber-reinforced metal composite with alumina-silica fiber as a reinforcing fiber and an aluminum alloy as a matrix. Abrasion tests and seizure tests were conducted on sliding members made of metal, the other member being made of metal coated with a sprayed layer of particle dispersion-strengthened metal composite material. This will be explained in comparison with wear tests and seizure tests conducted on sliding members made of a combination of materials.
まず平均繊維径2.8μ、平均繊維長6a+a+のアル
ミナ−シリカ繊維(55wt%A+ 、 03 、残部
実質的にSin、)が実質的に三次元ランダムにて配向
された繊維成形体を形成し、該繊維成形体を用いて行わ
れる高圧鋳造(溶湯の温度730℃、溶湯に対する加圧
力500 kg/ am2)により、体積率8%のアル
ミナ−シリカ繊維を強化繊維としアルミニウム合金(J
IS規格AC8A)をマトリックスとする複合材料を製
造した。次いでこの複合材料より大きさが16X6X1
0mmであり、その一つの面(16X6a+w)を試験
面とする平板試験片を多数作成した。また比較用として
アルミナ−シリカ繊維にて強化されていないアルミニウ
ム合金(JIS規格AC8A)のみよりなり、上述の平
板試験片と同一の寸法を有する平板試験片を多数作成し
た。First, alumina-silica fibers (55 wt% A+, 03, the remainder substantially Sin) having an average fiber diameter of 2.8μ and an average fiber length of 6a+a+ are oriented in a substantially three-dimensional random manner to form a fiber molded body, By high-pressure casting (temperature of molten metal 730°C, pressure applied to molten metal 500 kg/am2) using the fiber molded body, aluminum alloy (J
A composite material having IS standard AC8A) as a matrix was manufactured. Then, the size of this composite material is 16X6X1
A large number of flat test pieces were prepared, each having a diameter of 0 mm and one surface (16×6a+w) serving as the test surface. For comparison purposes, a large number of flat plate test pieces were prepared that were made only of aluminum alloy (JIS standard AC8A) that was not reinforced with alumina-silica fibers and had the same dimensions as the above-mentioned flat plate test pieces.
次いでこれらの平板試験片を順次摩擦摩耗試験機にセッ
トし、相手部材である外径35+++n、内径3011
1111%幅10tmの球状黒鉛鋳鉄(JIS規洛FC
D70)又は厚さ150μのプラズマ溶射層にて被覆さ
れた球状黒鉛鋳鉄(JISm洛FCD70)製の円筒試
験片の端面と接触させ、それらの試験片の接触部に温度
150℃の潤滑油(キャッスルモータオイル5W−30
)を供給しつつ、荷重60 kg、回転数160 rp
a+にて円筒試験片を1時間回転させる摩耗試験を行っ
た。Next, these flat test pieces were sequentially set in a friction and wear tester, and the outer diameter of the mating member was 35+++n and the inner diameter was 3011.
1111% width 10tm spheroidal graphite cast iron (JIS Kiraku FC
D70) or spheroidal graphite cast iron (JISm Raku FCD70) coated with a 150μ thick plasma sprayed layer, the test pieces were brought into contact with the end face of a cylindrical test piece made of spheroidal graphite cast iron (JISm Raku FCD70), and lubricating oil (Castle Motor oil 5W-30
), load 60 kg, rotation speed 160 rp.
A wear test was conducted by rotating a cylindrical test piece for 1 hour at a+.
尚平板試験片と円筒試験片との組合せは下記の表1に記
されている通りであり、表1 (その他の表に於ても同
じ)の「・・・−・・・溶射」の表示に於けるーの前の
部分及び後の部分はそれぞれ各溶射層を構成する粒子分
散強化金属複合材料のマトリックス及び金属酸化物粒子
を示しており、各溶射層の金属酸化物粒子含有量及び粒
子の平均粒径はそれぞれ40vo1%、10μであった
。また各溶射層は、円筒試験片の一方の端面をショツト
ブラストにより清浄化した後、METCO社製のプラズ
マ溶射装置(3MB)を用いて、それぞれ下記の表2に
示された条件にてプラズマ溶射を行うことにより形成さ
れた。また表1に於て、組合せA1〜A5の円筒試験片
の溶射層の表面粗さの単位はμRzであり、他の組合せ
の円筒試験片の被試験面の表面粗さは全て1,2μRz
であり、表面粗さは被試験面に対する研削条件を変更す
ることにより調整された。The combinations of the flat plate test piece and the cylindrical test piece are as shown in Table 1 below. The parts before and after the symbol - in , respectively indicate the matrix and metal oxide particles of the particle dispersion-strengthened metal composite material constituting each sprayed layer, and the metal oxide particle content and particles of each sprayed layer. The average particle diameters were 40vol% and 10μ, respectively. Each thermal spray layer was applied by cleaning one end surface of the cylindrical test piece by shot blasting, and then using a plasma spraying device (3MB) manufactured by METCO, plasma spraying was performed under the conditions shown in Table 2 below. It was formed by doing the following. In addition, in Table 1, the unit of surface roughness of the sprayed layer of the cylindrical test pieces of combinations A1 to A5 is μRz, and the surface roughness of the surface to be tested of the cylindrical test pieces of other combinations is all 1.2 μRz.
The surface roughness was adjusted by changing the grinding conditions for the test surface.
表 1(その1)
表 1(その2)
表 1(その3)
表 2
(プラズマ溶射条件)
A「ガス流量: 23001/hr
H2ガス流fi: 450ノ/br
供給電流: 450〜500A
混合粉末の平均粒径: 20μ
混合粉末の供給量: 40g/mln溶射距離二10
0a+1n
この摩耗試験の結果を第1図に示す。尚第1図に於て、
上半分は平板試験片の摩耗量(摩耗痕深さμ)を表わし
ており、下半分は相手材である円筒試験片の摩耗量(摩
耗減量mg)を表わしている(後述の第2図〜第5図に
於ても同じ)。Table 1 (Part 1) Table 1 (Part 2) Table 1 (Part 3) Table 2 (Plasma spraying conditions) A Gas flow rate: 23001/hr H2 gas flow fi: 450 no/br Supply current: 450 to 500 A Mixed powder Average particle size: 20μ Supply amount of mixed powder: 40g/mln Spraying distance: 210
0a+1n The results of this wear test are shown in FIG. Furthermore, in Figure 1,
The upper half represents the wear amount (wear scar depth μ) of the flat plate test piece, and the lower half represents the wear amount (wear loss mg) of the cylindrical test piece, which is the counterpart material (see Figures 2 to 3 below). The same applies to Figure 5).
第1図より、組合せλ14〜A I9の平板試験片の摩
耗口は非常に高い値であり、特に組合せA I4の場合
には円筒試験片の摩耗量も比較的高い値であることが解
る。また組合せA、−Aこの平板試験片の摩耗量は組合
せA 14〜A I9の平板試験片の摩耗量に比して遥
かに小さい値であり、またこれらの組合せA、−AI=
の円筒試験片の摩耗量は組合せA I3及びA I4よ
りも遥かに小さい値であることが解る。かくしてアルミ
ナ−シリカ繊維にて強化されたアルミニウム合金よりな
る平板試験片と金属酸化物粒子分散強化金属複合材料の
溶射層にて被覆された球状黒鉛鋳鉄よりなる円筒試験片
との組合せA1〜AI!!の場合には、平板試験片及び
円筒試験片両方の摩耗量が他の組合せの場合に比して小
さく、特に組合せ八1〜A5の摩耗試験の結果より、溶
射層の表面粗さは1.2μRz以下であることが好まし
いことが解る。From FIG. 1, it can be seen that the wear holes of the flat plate test pieces of the combinations λ14 to A I9 are very high values, and especially in the case of the combination A I4, the wear amount of the cylindrical test pieces is also a relatively high value. Further, the wear amount of the flat plate test pieces of combinations A and -A is much smaller than that of the flat plate test pieces of combinations A14 to A I9, and these combinations A and -AI=
It can be seen that the wear amount of the cylindrical test piece is much smaller than that of combinations A I3 and A I4. Thus, the combinations A1 to AI of flat test pieces made of aluminum alloy reinforced with alumina-silica fibers and cylindrical test pieces made of spheroidal graphite cast iron coated with a sprayed layer of metal oxide particle dispersion-strengthened metal composite material! ! In the case of , the wear amount of both the flat plate test piece and the cylindrical test piece is smaller than that of other combinations, and in particular, from the wear test results of combinations 81 to A5, the surface roughness of the sprayed layer is 1. It can be seen that it is preferable that it is 2 μRz or less.
また上掲の表1に示された試験片の組合せ八1〜A I
9について、平板試験片と円筒試験片との接触部に常温
の潤滑油(キャッスルモータオイル5W−30)を供給
し、円筒試験片を回転数1000 rpmにて回転さ
せつつ平板試験片に対する円筒試験片の抑圧荷重を10
kgより700 kgまで増加させ、これにより焼付き
限度荷重を測定する焼付き試験を行った。In addition, test piece combinations 81 to A I shown in Table 1 above
Regarding 9, lubricating oil (castle motor oil 5W-30) at room temperature was supplied to the contact area between the flat plate test piece and the cylindrical test piece, and the cylindrical test was performed on the flat plate test piece while rotating the cylindrical test piece at a rotation speed of 1000 rpm. The suppression load of the piece is 10
kg to 700 kg, and a seizure test was conducted to measure the maximum seizure load.
この試験の結果、組合せA、−A12)特に組合せA3
−A12の焼付き限度荷重は他の何れの組合せよりも高
く、従ってこれらの組合せは耐焼付き性にも優れている
ことが確認された。As a result of this test, combination A, -A12) especially combination A3
-A12 had a higher seizure limit load than any other combination, and it was therefore confirmed that these combinations also had excellent seizure resistance.
実施例2
上述の実施例1の場合と同一の要領にて、体積率8%に
て実質的に三次元ランダムにて配向されたアルミナ−シ
リカ繊維(実施例1に於て使用されたアルミナ−シリカ
繊維と同一)を強化繊維とし、マグネシウム合金(JI
S規格MC2)をマトリックスとする複合材料を高圧鋳
造(溶湯の温度700℃、溶湯に対する加圧力800
kg/ am” )にて製造し、該複合材料より実施例
1の場合と同一の寸法の平板試験片を多数作成した。Example 2 In the same manner as in Example 1 above, alumina-silica fibers (alumina-silica fibers used in Example 1) were oriented in a substantially three-dimensional random manner at a volume fraction of 8%. The same as silica fiber) is used as the reinforcing fiber, and magnesium alloy (JI
A composite material with S standard MC2) as a matrix was cast under high pressure (temperature of molten metal 700°C, pressure applied to the molten metal 800°C).
kg/am''), and a large number of flat test specimens with the same dimensions as in Example 1 were prepared from the composite material.
次いでこれらの平板試験片について、下記の表3に示さ
れた試験片の組合せにて実施例1の場合と同一の要領及
び条件にて摩耗試験及び焼付き試験を行った。尚下記の
表3に示された組合せB1〜B3の円筒試験片はそれぞ
れ上掲の表1に示された組合せA2)A3 、A5と同
一の要領及び条件にて、また組合せ84〜B11の円筒
試験片はそれぞれ組合せA6〜A8と同一の要領及び条
件にて溶射層が形成され表面粗さが調整されたものであ
り、組合せB7の円筒試験片の被試験面の表面粗さは1
.2μRzであった。Next, with respect to these flat test pieces, a wear test and a seizure test were conducted using the test piece combinations shown in Table 3 below in the same manner and under the same conditions as in Example 1. The cylindrical test pieces of combinations B1 to B3 shown in Table 3 below were prepared in the same manner and under the same conditions as combinations A2) A3 and A5 shown in Table 1 above, and the cylindrical test pieces of combinations 84 to B11 were Each of the test pieces had a sprayed layer formed and the surface roughness adjusted in the same manner and under the same conditions as combinations A6 to A8, and the surface roughness of the test surface of the cylindrical test piece of combination B7 was 1.
.. It was 2μRz.
表 3
この摩耗試験の結果を第2図に示す。第2図より、組合
せBTの場合に比して組合せB!〜B6の摩耗量は平板
試験片及び円筒試験片の何れについても低い値であり、
特に組合せ82〜B、の摩耗量は平板試験片及び円筒試
験片の何れについても組合せB1の場合よりも低い値で
あり、従ってアルミナ−シリカ繊維にて強化されたマグ
ネシウム合金よりなる複合材料と金属酸化物粒子分散強
化金属複合材料の溶射層にて被覆された球状黒鉛鋳鉄と
の組合せも耐摩耗性に優れており、また溶射層の表面粗
さは1.2μRz以下であることが好ましいことが解る
。Table 3 The results of this wear test are shown in Figure 2. From FIG. 2, it can be seen that the combination B! compared to the combination BT! ~The wear amount of B6 is a low value for both the flat plate test piece and the cylindrical test piece,
In particular, the wear amount of combinations 82 to B is lower than that of combination B1 for both the flat plate test piece and the cylindrical test piece. The combination with spheroidal graphite cast iron coated with a sprayed layer of oxide particle dispersion reinforced metal composite material also has excellent wear resistance, and the surface roughness of the sprayed layer is preferably 1.2 μRz or less. I understand.
また図には示されていないが、焼付き試験の結果、アル
ミナ−シリカ繊維にて強化されたマグネシウム合金より
なる複合材料と金属酸化物粒子分散強化金属複合材料の
溶射層にて被覆された球状黒鉛鋳鉄との組合せは耐焼付
き性にも優れている゛ことが確認された。Also, although not shown in the figure, as a result of the seizure test, a spherical shape coated with a sprayed layer of a composite material made of a magnesium alloy reinforced with alumina-silica fibers and a metal composite material reinforced with dispersion of metal oxide particles was found. It was confirmed that the combination with graphite cast iron also has excellent seizure resistance.
実施例3
上述の実施例1の場合と同一の要領にて、体積率6%に
て実質的に三次元ランダムにて配向されたアルミナ繊維
(95wt%A+203、残部実質的に8102)平均
繊維径3.2μ、平均繊維長8 ma+)を強化繊維と
し、アルミニウム合金(JIS規格A D C10,)
をマトリックスとする複合材料を高圧鋳造(溶湯の温度
740℃、溶湯に対する加圧力500 kg/ cab
2)にて製造し、該複合材料より実施例1の場合と同一
の寸法の平板試験片を多数作成した。Example 3 Alumina fibers (95 wt% A+203, remainder substantially 8102) oriented in a substantially three-dimensional random manner at a volume ratio of 6% in the same manner as in Example 1 above. Average fiber diameter. 3.2 μ, average fiber length 8 ma+) as reinforcing fibers, aluminum alloy (JIS standard A D C10,)
High-pressure casting of a composite material with a matrix of
2), and a large number of flat test pieces having the same dimensions as in Example 1 were prepared from the composite material.
次いでこれらの平板試験片について、下記の表4に示さ
れた試験片の組合せにて実施例1の場合と同一の要領及
び条件にて摩耗試験及び焼付き試験を行った。尚下記の
表4に示された組合せ01〜C3の円筒試験片はそれぞ
れ玉揚の表1に示された組合せA2 、A3 、A5と
同一の要領及び条件にて、また組合せ04〜Caの円筒
試験片はそれぞれ組合せA8〜ASと同一の要領及び条
件にて溶射層が形成され表面粗さが調整されたものであ
り、組合せC7の円筒試験片の被試験面の表面粗さは1
.2μRzであった。Next, these flat test pieces were subjected to wear tests and seizure tests using the test piece combinations shown in Table 4 below in the same manner and under the same conditions as in Example 1. The cylindrical test pieces of combinations 01 to C3 shown in Table 4 below were prepared in the same manner and under the same conditions as the doffing combinations A2, A3, and A5 shown in Table 1, and the cylindrical test pieces of combinations 04 to Ca were Each of the test pieces had a sprayed layer formed and the surface roughness adjusted in the same manner and under the same conditions as combinations A8 to AS, and the surface roughness of the test surface of the cylindrical test piece of combination C7 was 1.
.. It was 2 μRz.
表 4
この摩耗試験の結果を第3図に示す。第3図より、組合
せcTの場合に比して組合せ01〜C6の摩耗量は平板
試験片及び円筒試験片の何れについても低い値であり、
特に組合せ02〜C6の摩耗量は平板試験片及び円筒試
験片の何れについても組合せCIの場合よりも低い値で
あり、従ってアルミナ繊維にて強化されたアルミニウム
合金よりなる複合材料と金属酸化物粒子分散強化金属複
合材料の溶射層にて被覆された球状黒鉛鋳鉄との組合せ
も耐摩耗性に優れており、また溶射層の表面粗さは1.
2μRz以下であることが好ましいことが解る。Table 4 The results of this wear test are shown in Figure 3. From FIG. 3, compared to the case of combination cT, the wear amount of combinations 01 to C6 is a lower value for both the flat plate test piece and the cylindrical test piece,
In particular, the wear amount of combinations 02 to C6 is lower than that of combination CI for both the flat plate test piece and the cylindrical test piece. The combination with spheroidal graphite cast iron coated with a sprayed layer of dispersion-strengthened metal composite material also has excellent wear resistance, and the surface roughness of the sprayed layer is 1.
It can be seen that it is preferable that it is 2 μRz or less.
また図には示されていないが、焼付き試験の結果、アル
ミナ繊維にて強化されたアルミニウム合金よりなる複合
材料と金属酸化物粒子分散強化金属複合材料の溶射層に
て被覆された球状黒鉛鋳鉄との組合せは耐焼付き性にも
優れていることが確認された。Also, although not shown in the figure, as a result of the seizure test, spheroidal graphite cast iron was coated with a composite material made of aluminum alloy reinforced with alumina fibers and a sprayed layer of a metal composite material reinforced with dispersion of metal oxide particles. It was confirmed that the combination with
実施例4
上述の実施例1の場合と同一の要領にて、体積率6%に
て実質的に三次元ランダムにて配向されたアルミナ繊維
(実施例3に於て使用されたアルミナ繊維と同一)を強
化繊維とし、マグネシウム合金(JIS規格MC2)を
マトリックスとする複合材料を高圧鋳造(溶湯の温度7
00℃、溶湯に対する加圧力800 ’kg/ ati
2)にて製造し、該複合材料より実施例1の場合と同一
の寸法の平板試験片を多数作成した。Example 4 Alumina fibers (same as the alumina fibers used in Example 3) were oriented in a substantially three-dimensional random manner at a volume fraction of 6% in the same manner as in Example 1 above. ) as reinforcing fibers and a magnesium alloy (JIS standard MC2) as a matrix by high-pressure casting (molten metal temperature 7
00℃, pressurizing force on molten metal 800'kg/ati
2), and a large number of flat test pieces having the same dimensions as in Example 1 were prepared from the composite material.
次いでこれらの平板試験片について、下記の表5に示さ
れた試験片の組合せにて実施例1の場合と同一の要領及
び条件にて摩耗試験及び焼付き試験を行った。尚下記の
表5に示された組合せD1〜D3の円筒試験片はそれぞ
れ1掲の表1に示された組合せA2 、A3 、Asと
同一の要領及び条件にて、また組合せD4〜D6の円筒
試験片はそれぞれ組合せA6〜A8と同一の要領及び条
件にて溶射層が形成され表面粗さが調整されたものであ
り、組合せBTの円筒試験片の被試験面の表面粗さは1
.2μRzであった。Next, a wear test and a seizure test were conducted on these flat test pieces in the same manner and under the same conditions as in Example 1 using the combinations of test pieces shown in Table 5 below. The cylindrical test pieces of combinations D1 to D3 shown in Table 5 below were prepared in the same manner and under the same conditions as the combinations A2, A3, and As shown in Table 1, respectively, and the cylindrical test pieces of combinations D4 to D6 were Each of the test pieces had a sprayed layer formed and the surface roughness adjusted in the same manner and under the same conditions as combinations A6 to A8, and the surface roughness of the test surface of the cylindrical test piece of combination BT was 1.
.. It was 2 μRz.
表 5
この摩耗試験の結果を第4図に示す。第4図より、組合
せDTの場合に比して組合せD1〜Dflの摩耗量は平
板試験片及び円筒試験片の何れについても低い値であり
、特に組合せD2〜Dδの摩耗量は平板試験片及び円筒
試験片の何れについても組合せDlよりも低い値であり
、従ってアルミナ繊維にて強化されたマグネシウム合金
よりなる複合材料と金属酸化物粒子分散強化金属複合材
料の溶射層にて被覆された球状黒鉛鋳鉄との組合せも耐
摩耗性に優れており、また溶射層の表面粗さは1.2μ
Rz以下であることが好ましいことが解る。Table 5 The results of this wear test are shown in Figure 4. From FIG. 4, compared to the case of combination DT, the wear amount of combinations D1 to Dfl is a lower value for both the flat plate test piece and the cylindrical test piece, and in particular, the wear amount of combinations D2 to Dδ is a lower value for both the flat plate test piece and the cylindrical test piece. All of the cylindrical test pieces had lower values than the combination Dl, and therefore, the spheroidal graphite coated with a sprayed layer of a composite material made of a magnesium alloy reinforced with alumina fibers and a metal composite material reinforced with dispersion of metal oxide particles. The combination with cast iron has excellent wear resistance, and the surface roughness of the sprayed layer is 1.2μ.
It can be seen that it is preferable that Rz or less.
また図には示されていないが、焼付き試験の結果、アル
ミナ繊維にて強化されたマグネシウム合金よりなる複合
材料と金属酸化物粒子分散強化金属複合材料の溶射層に
て被覆された球状黒鉛鋳鉄との組合せは耐焼付き性にも
優れていることが確認された。Although not shown in the figure, as a result of the seizure test, spheroidal graphite cast iron was coated with a composite material made of magnesium alloy reinforced with alumina fibers and a sprayed layer of a metal composite material reinforced with dispersion of metal oxide particles. It was confirmed that the combination with
尚実施例2〜4と同様の摩耗試験を、溶射層のマトリッ
クスがNiである円筒試験片についても行ったところ、
それぞれ実施例2〜4の場合と同様の結果が得られた。The same wear test as in Examples 2 to 4 was also conducted on a cylindrical test piece in which the matrix of the sprayed layer was Ni.
Results similar to those of Examples 2 to 4 were obtained.
実施例5
円筒試験片の表面にプラズマ溶射を行う際のFe粉末と
ZrO!!粉末との混合比を変化させることにより、円
筒試験片の溶射層のZrO2粒子含有量がOvo19g
、10vo1%、25vo1%、40vo1%、60v
o1%、85vo1%、100vo1%となるよう、上
述の実施例1の場合と同一の要領及び条件にてプラズマ
溶射を行い、実施例1の組合せA1〜A I3の平板試
験片と同一の平板試験片を用いて、実施例1の場合と同
一の要領及び条件にて摩耗試験を行った。この摩耗試験
の結果を第5図に示す。Example 5 Fe powder and ZrO when performing plasma spraying on the surface of a cylindrical test piece! ! By changing the mixing ratio with the powder, the ZrO2 particle content in the sprayed layer of the cylindrical test piece was reduced to Ovo19g.
, 10vo1%, 25vo1%, 40vo1%, 60v
Plasma spraying was performed in the same manner and under the same conditions as in Example 1 above to obtain 01%, 85vo1%, and 100vo1%, and the same flat plate test as the flat plate test pieces of combinations A1 to A I3 of Example 1 was performed. A wear test was conducted using the piece under the same procedure and conditions as in Example 1. The results of this wear test are shown in FIG.
第5図より、平板試験片の摩耗量はZrO2含有量が3
0vo1%未満及び80VOI%を越える場合に、特に
25vo1%未満及び85vo1%を越える場合に高い
値であり、また円筒試験片の摩耗量はZrO2含有量が
30vo1%未満、特に25v。From Figure 5, the wear amount of the flat plate test piece is
The value is high when the ZrO2 content is less than 0 VO1% and more than 80 VOI%, especially when it is less than 25 VO1% and more than 85 VOI%, and the wear amount of the cylindrical test piece is higher when the ZrO2 content is less than 30 VO1%, especially 25V.
1%未満の場合に高い値であることが解る。かかる結果
を得たのは、ZrO2含有量が少ない場合には、溶射層
の耐摩耗性が不十分になって摩耗量が増大し、溶射層の
摩耗に伴って発生する摩耗粉により平板試験片の摩耗量
が増大され、またZrO2含有量が高い領域に於ては、
溶射層の硬さが高くなり過ぎ、また溶射層よりZrO2
粒子が脱落し易くなることによるものと考えられる。第
5図に示された結果より、ZrO2含有量は25〜85
vo1%、特に30〜80vo1%であることが好
ましいことが解る。It can be seen that the value is high when it is less than 1%. This result was obtained because when the ZrO2 content is low, the wear resistance of the sprayed layer becomes insufficient and the amount of wear increases. In areas where the amount of wear is increased and the ZrO2 content is high,
The hardness of the sprayed layer becomes too high, and the ZrO2
This is thought to be due to particles becoming easier to fall off. From the results shown in Figure 5, the ZrO2 content is between 25 and 85.
It can be seen that vol 1%, particularly 30 to 80 vol %, is preferable.
尚この実施例と同様の摩耗試験を実施例2〜4の場合と
同一の平板試験片を用いて行ったところ、第5図に示さ
れた結果と同様の結果が得られた。When the same wear test as in this example was conducted using the same flat test piece as in Examples 2 to 4, results similar to those shown in FIG. 5 were obtained.
また実施例1より、Cr203、TiO2)Al2O3
もZ r 02と同様の機能を果たす金属酸化物である
ので、金属酸化物粒子としてこれらの粒子が使用される
場合も同様の結果が得られるものと推測される。Furthermore, from Example 1, Cr203, TiO2)Al2O3
Since Z r 02 is also a metal oxide that performs the same function as Z r 02, it is presumed that similar results will be obtained when these particles are used as the metal oxide particles.
実施例6
実施例1に於て使用されたアルミナ−シリカ繊維と同一
のアルミナ−シリカtJANが実質的に三次元ランダム
にて配向された繊維成形体を形成し、該繊維成形体を用
いて行われる高圧鋳造(溶湯の温度730℃、溶湯に対
する加圧力500 kg/ cm2)により、体積率8
%のアルミナ−シリカ繊維を強化繊維としアルミニウム
合金(JIS規格ADT4)をマトリックスとする複合
材料を製造した。次いでこの複合材料より外径25.6
mttr、内径20.0mm、長さ16mmの寸法を有
し一方の端面を被試験面とする円筒試験片を8個形成し
、各試験片の被試験面の表面粗さを研削により0. 6
μRzに仕上げた。Example 6 Alumina-silica tJAN, which is the same as the alumina-silica fiber used in Example 1, was formed into a fiber molded body in which the fibers were oriented in a substantially three-dimensional random manner, and the fiber molded product was used in the experiment. By high-pressure casting (temperature of molten metal 730℃, pressure applied to molten metal 500 kg/cm2), the volume ratio is 8.
% of alumina-silica fibers as reinforcing fibers and an aluminum alloy (JIS standard ADT4) as a matrix. Next, from this composite material, the outer diameter is 25.6
Eight cylindrical test pieces having dimensions of mttr, inner diameter 20.0 mm, and length 16 mm with one end face as the test surface were formed, and the surface roughness of the test surface of each test piece was reduced to 0.0 by grinding. 6
Finished to μRz.
次いで硝酸水溶液を用いて行われる電解エツチングによ
り、6個の円筒試験片の被試験面のマトリックスの表面
に凹部を形成した。ff16図はがくして形成された試
験片の被試験面近傍の断面を示す模式図であり、図に於
て21は強化繊維としてのアルミナ−シリカ繊維を示し
ており、22はマトリックスとしてのアルミニウム合金
を示しており、23は凹部を示している。Next, recesses were formed on the surface of the matrix of the test surface of the six cylindrical test pieces by electrolytic etching using an aqueous nitric acid solution. Fig. ff16 is a schematic diagram showing a cross section near the test surface of a test piece formed by peeling, and in the figure, 21 indicates alumina-silica fibers as reinforcing fibers, and 22 indicates an aluminum alloy as a matrix. 23 indicates a recessed portion.
この場合電解エツチングの条件を適宜に設定することに
より、被試験面の任意の断面に現われる凹部23の深さ
Dlの平均値口が1.8μであり、凹部23の開口径に
対する深さの比の平均値、即ち被試験面の任意の断面に
現われる凹部23の開口部長さWlに対する深さDlの
比の平均値DI /Wlが0,02であり、複合材料の
表面24よりアルミナ−シリカ繊維の露出高さHlの平
均値H1が0,8μであり、凹部の面積率、即ち複合材
料の任意の断面の成る基阜長さしに対する凹部23の開
口部長さWlの合計の比の百分率が20%である6個の
円筒試験片が形成された。In this case, by appropriately setting the electrolytic etching conditions, the average value of the depth Dl of the recesses 23 appearing on any cross section of the surface to be tested is 1.8μ, and the ratio of the depth to the opening diameter of the recesses 23 is obtained. That is, the average value DI /Wl of the ratio of the depth Dl to the opening length Wl of the recess 23 appearing in an arbitrary cross section of the test surface is 0.02, and the alumina-silica fiber is smaller than the surface 24 of the composite material. The average value H1 of the exposed height Hl of is 0.8μ, and the area ratio of the recesses, that is, the percentage of the total ratio of the opening length Wl of the recesses 23 to the base length of an arbitrary cross section of the composite material is Six cylindrical specimens, representing 20%, were formed.
次いで電解エツチングが行われたこれらの円筒試験片及
び電解エツチングが行われず、従って凹部の深さ、アル
ミナ−シリカ繊維の露出裔さ及び凹部の面積率が0であ
る複合材料よりなる円筒試験片を順次摩擦摩耗試験機に
セットし、球状黒鉛鋳鉄(JIS規格FCD70)より
なり、大きさが30 X 30 X 5 mmであり、
その一つの面(30X 30 av)を被試験面とする
平板試験片の被試験面と接触させ、それらの試験片の接
触部に常温の潤滑油(キャッスルモータオイル5AE3
0) を供給し、円筒試験片を回転数11000rpに
て回転させつつ、平板試験片に対する円筒試験片の抑圧
荷重を10kgより700 kgまで増加させ、これに
より焼付き限度荷重を測定する焼付き試験を行った。Next, these cylindrical specimens were subjected to electrolytic etching, and cylindrical specimens made of a composite material in which no electrolytic etching was performed, and therefore the depth of the recess, the exposed progeny of the alumina-silica fibers, and the area ratio of the recess were 0. The test pieces were sequentially set in a friction and wear tester, and were made of spheroidal graphite cast iron (JIS standard FCD70) and had a size of 30 x 30 x 5 mm.
One surface (30 x 30 av) of the test piece is brought into contact with the surface to be tested of a flat test piece, and the contact area of the test piece is filled with lubricating oil (Castle Motor Oil 5AE3) at room temperature.
0) and rotating the cylindrical test piece at a rotational speed of 11,000 rpm, increasing the suppressing load of the cylindrical test piece against the flat plate test piece from 10 kg to 700 kg, thereby measuring the seizure limit load. I did it.
尚この焼付き試験に於ける円筒試験片と平板試験片との
組合せは下記の表6に示す通りであった。The combinations of cylindrical test pieces and flat plate test pieces in this seizure test were as shown in Table 6 below.
また各平板試験片の被試験面の表面粗さは全て1゜2μ
Rzであり、組合せEl及びE4〜E8の平板試験片に
於ける粒子分散強化金属複合材料の溶射層はそれぞれ上
掲の表2に示された条件と同一の条件のプラズマ溶射に
より形成された。In addition, the surface roughness of the tested surface of each flat test piece was 1°2μ.
Rz, and the sprayed layers of particle dispersion reinforced metal composite materials in the flat test specimens of combinations El and E4 to E8 were each formed by plasma spraying under the same conditions as shown in Table 2 above.
表 に
の焼付き試験の結果を第7図に示す。第7図より、組合
せElの焼付き限度荷重は組合せE!!の焼付き限度荷
重よりも遥かに高く、組合せE4〜Ea (焼付き発
生せず)の焼付き限度荷重は組合せE2及びE3の焼付
き限度荷重よりも遥かに高く、従ってアルミナ−シリカ
繊維にて強化されたアルミニウム合金よりなる複合材料
と金属酸化物粒子分散強化金属複合材料の溶射層にて被
覆された球状黒鉛鋳鉄との組合せ、及びアルミナ−シリ
カ繊維にて強化されたアルミニウム合金よりなり電解エ
ツチングされた複合材料と金属酸化物粒子分散強化金属
複合材料の溶射層にて被覆された球状黒鉛鋳鉄との組合
せは耐焼付き性に優れていることが解る。また特に組合
せElとE4との比較より、複合材料に電解エツチング
を施して強化繊維を露出させると共に、複合材料の表面
の強化繊維の間に凹部を形成すれば耐焼付き性が更に向
上することが解る。Figure 7 shows the results of the seizure test shown in Table 2. From Figure 7, the seizure limit load of combination El is combination E! ! The maximum seizure load of combinations E4 to Ea (no seizure occurs) is much higher than the maximum seizure load of combinations E2 and E3. A combination of a composite material made of a reinforced aluminum alloy and spheroidal graphite cast iron coated with a sprayed layer of metal oxide particle dispersion reinforced metal composite material, and an electrolytic etching made of an aluminum alloy reinforced with alumina-silica fibers. It can be seen that the combination of this composite material and spheroidal graphite cast iron coated with a sprayed layer of metal oxide particle dispersion reinforced metal composite material has excellent seizure resistance. Furthermore, especially from the comparison between combinations El and E4, it was found that the seizure resistance could be further improved by subjecting the composite material to electrolytic etching to expose the reinforcing fibers and forming recesses between the reinforcing fibers on the surface of the composite material. I understand.
面図には示されていないが、上掲の表6に示された試験
片の組合せについて実施例1の場合と同一の要領にて摩
耗試験を行ったところ、組合せEl及びE4〜Ea、特
に組合せE4〜E日は耐摩耗性にも優れていることが確
認された。Although not shown in the plan view, when a wear test was conducted on the combinations of test pieces shown in Table 6 above in the same manner as in Example 1, combinations El and E4 to Ea, especially It was confirmed that combinations E4 to E days were also excellent in wear resistance.
実施例7
第8図は内燃機関のピストンとピストンリングとの組合
せよりなる本発明による摺動用部材の具体的実施例を示
す解図的縦断面図、第9図はその要部を示す解図的拡大
部分縦断面図、第10図はピストンリング(トップリン
グ)を拡大して示す解図的部分縦断面図である。Embodiment 7 FIG. 8 is an illustrative longitudinal sectional view showing a specific embodiment of a sliding member according to the present invention, which is a combination of a piston and a piston ring for an internal combustion engine, and FIG. 9 is an illustrative diagram showing the main parts thereof. Fig. 10 is an illustrative partial longitudinal sectional view showing an enlarged piston ring (top ring).
これらの図に於て、1はピストンであり、アルミニウム
合金(JIS規格AC8A)にて構成されている。ピス
トン1の側部外周面2には、燃焼ガスがピストン1とシ
リンダブロック3のシリンダ壁面との間を経て内燃機関
の燃焼室より漏洩するのを防止するコンプレッションリ
ング4及び5を受入れる二つのリング溝6及び7と、余
分のオイルを掻落すオイルリング8を受入れるリング溝
9とが形成されている。In these figures, 1 is a piston, which is made of aluminum alloy (JIS standard AC8A). On the side outer circumferential surface 2 of the piston 1 are two rings that receive compression rings 4 and 5 that prevent combustion gas from leaking from the combustion chamber of the internal combustion engine through the space between the piston 1 and the cylinder wall surface of the cylinder block 3. Grooves 6 and 7 and a ring groove 9 for receiving an oil ring 8 for scraping off excess oil are formed.
図示の実施例に於ては、ピストン1の側部外周面2に沿
うピストンヘッド10よりトップリング溝6の下面11
の下方までの部分は、実施例1に於て使用されたアルミ
ナ−シリカ繊維と同一のアルミナ−シリカ繊維が体積率
8%にて実質的に三次元ランダムに配向された繊維成形
体を強化材とし、ピストン1の他の部分を構成するアル
ミニウム合金(JIS規格AC8A)をマトリックスと
する複合材料12にて構成されている。この複合材料1
2はトップリング4を受入れるトップリング溝6の壁面
を郭定しており、またピストンの側部外周面2に露出す
る部分にてトップランド13及びセカンドランド14の
一部を郭定している。In the illustrated embodiment, the lower surface 11 of the top ring groove 6 is closer to the piston head 10 along the side outer peripheral surface 2 of the piston 1.
The lower part is reinforced with a fiber molded body in which the same alumina-silica fibers as the alumina-silica fibers used in Example 1 are oriented in a substantially three-dimensional random manner at a volume ratio of 8%. The other parts of the piston 1 are made of a composite material 12 having an aluminum alloy (JIS standard AC8A) as a matrix. This composite material 1
2 defines the wall surface of the top ring groove 6 that receives the top ring 4, and also defines a part of the top land 13 and the second land 14 in the portion exposed to the side outer peripheral surface 2 of the piston. .
尚、かかるピストンはそれを鋳造するための鋳型のモー
ルドキャビティ底壁上に繊維成形体を裁置し、その鋳型
内にアルミニウム合金の溶湯を注湯し、その鋳型に液密
的に嵌合するプランジャによりアルミニウム合金を加圧
しつつ凝固させてピストン粗材とし、それを熱処理(T
6処理)した後所定の寸法に加工し、更にリング溝6.
7.9を形成することによって製造されてよい。In addition, such a piston is made by placing a fiber molded body on the bottom wall of a mold cavity of a mold for casting the piston, pouring molten aluminum alloy into the mold, and fitting the piston into the mold in a fluid-tight manner. The aluminum alloy is solidified while being pressurized by a plunger to form a piston rough material, which is then heat treated (T
6 processing), it is processed to the specified dimensions, and then the ring groove 6.
7.9.
上述の如きピストン1と互いに当接して相対的にJfI
Mするトップリング4は、ステンレスm(JIs規格5
US420J2)にて構成されており、図には示されて
いないが下面17は厚さ20μのCr2O3粒子分散F
eの溶射層(Cr203含宵H40vo1%、Cr2O
3粒子の平均粒径10μ、表面粗さ0.8μRz) 、
Tiop粒子分散Feの溶射層(T i 02粒子含有
量60vo1%、T i 02粒子の平均粒径10μ、
表面粗さ0.8μRZ ) 、又はZrO2粒子分散F
eの溶射層(Zr02粒子含有ff145vo1%、Z
rO2粒子の平均粒径15μ、表面粗さ0.8μRz)
にて被覆されている。特に図示の実施例は7°のキース
トンリングとして構成されており、そのシリンダブロッ
ク3のシリンダ壁面との摺動面部にモリブデン溶射層1
5が形成されたものである。Abutting against the piston 1 as described above and relatively JfI
The top ring 4 is made of stainless steel (JIs standard 5).
US420J2), and although not shown in the figure, the lower surface 17 is made of Cr2O3 particle-dispersed F with a thickness of 20μ.
e sprayed layer (Cr203 containing H40vo1%, Cr2O
3 particles average particle size 10μ, surface roughness 0.8μRz),
Sprayed layer of Tiop particle-dispersed Fe (T i 02 particle content 60vo1%, average particle size of Ti 02 particles 10μ,
Surface roughness 0.8μRZ) or ZrO2 particle dispersion F
Thermal sprayed layer of e (Zr02 particle containing ff145vo1%, Z
rO2 particles average particle size 15μ, surface roughness 0.8μRz)
covered with. In particular, the illustrated embodiment is configured as a 7° keystone ring, and a molybdenum sprayed layer 1 is provided on the sliding surface of the cylinder block 3 with the cylinder wall surface.
5 was formed.
上述の如く構成されたピストンとピストンリングとを4
気筒4サイクルデイ一ゼル機関に組込み、機関回転数5
400rpa+、機関負荷フルロードの試験条件にて5
00時間に亙る耐久試験を行なった。また比較の目的で
、球状黒鉛鋳鉄(JIS規格FCD70)にて形成され
、下面17が金属酸化物粒子分散強化金属複合材料の溶
射層にて被覆されていないピストンリングについても同
一の条件にて耐久試験を行った。The piston and piston ring configured as described above are
Built into a cylinder 4-stroke diesel engine, the engine speed is 5.
5 under test conditions of 400rpa+ and full engine load.
A durability test was conducted for 00 hours. For comparison purposes, a piston ring made of spheroidal graphite cast iron (JIS standard FCD70) whose lower surface 17 is not coated with a sprayed layer of a metal composite material reinforced by dispersion of metal oxide particles was also tested under the same conditions. We conducted a test.
試験の結果、下面17が金属酸化物粒子分散強化金属複
合材料の溶射層にて被覆されていない球状黒鉛鋳鉄製の
ピストンリングの場合には、リング溝の下面11の摩耗
量が20μであり、ピストンリングの下面17の摩耗量
が15μであったのに対し、下面17が金属酸化物粒子
分散強化金属複合材料の溶射層にて被覆されたピストン
リングの場合には、リング溝の下面11の摩耗量が3゜
0μであり、ピストンリングの下面17の摩耗量が0.
5μであり、従って実施例のピストン及びピストンリン
グは比較例よりも遥かに耐摩耗性に優れていることが認
められた。As a result of the test, in the case of a piston ring made of spheroidal graphite cast iron whose lower surface 17 is not coated with a sprayed layer of metal composite material reinforced by dispersion of metal oxide particles, the amount of wear on the lower surface 11 of the ring groove is 20μ, The amount of wear on the lower surface 17 of the piston ring was 15μ, whereas in the case of a piston ring whose lower surface 17 was coated with a sprayed layer of a metal composite material reinforced with dispersion of metal oxide particles, the amount of wear on the lower surface 11 of the ring groove was The amount of wear is 3°0μ, and the amount of wear on the lower surface 17 of the piston ring is 0.
5μ, and therefore, it was recognized that the pistons and piston rings of the examples had much better wear resistance than the comparative examples.
実施例8
上述の実施例1に於て使用されたアルミナ−シリカ繊維
及びアルミニウム合金を用いて、実質的に三次元ランダ
ムにて配向された体積率10%のアルミナ−シリカ繊維
にて強化されたアルミニウム合金よりなるシリンダライ
ナを高圧鋳造(溶湯の温度730℃、溶湯に対する加圧
力500 kg/am2)により製造し、該シリンダラ
イナをグラビテイ鋳造により鋳ぐるむことにより、シリ
ンダボア径80mmの4気筒4サイクル内燃機関用のシ
リンダブロックを4個形成し、各シリンダブロックのシ
リンダボアをホーニング加工によって表面粗さ0.6μ
Rzに仕上げた。Example 8 The alumina-silica fibers and aluminum alloy used in Example 1 above were reinforced with 10% volume fraction alumina-silica fibers oriented in a substantially three-dimensional random manner. A cylinder liner made of aluminum alloy is manufactured by high-pressure casting (molten metal temperature 730°C, pressure applied to the molten metal 500 kg/am2), and the cylinder liner is cast by gravity casting to produce a 4-cylinder, 4-stroke cylinder liner with a cylinder bore diameter of 80 mm. Four cylinder blocks for internal combustion engines are formed, and the cylinder bore of each cylinder block is honed to a surface roughness of 0.6μ.
Finished in Rz.
次いで球状黒鉛鋳鉄(JIS規格FCD70)よりなり
、半径方向外側の外周面がプラズマ溶射により厚さ15
0μのCr2O3粒子分散Feの溶射層(Cr203含
有Q40vo1%、Cr2O3粒子の平均粒径、10μ
、表面粗さ1.0μRz)、TiO2粒子分散Feの溶
射層(T i 02粒子含含有60vo1%、T i
O!粒子の平均粒径4゜μ、表面粗さ1.0μRz)
、又はZrO2粒子分散Feの溶射層CZrO2粒子含
有ff145vo1%、ZrO2粒子の平均粒径45μ
、表面粗さ1゜0μRz)にて被覆されたピストンリン
グと、球状黒鉛鋳鉄(JIS規格FCD70)よりなり
金属酸化物粒子分散強化金属複合材料の溶射層にて被覆
されていない比較例としてのピストンリングを用意し、
これらのピストンリングと上述のシリンダブロックとを
組合せて4気筒4サイクルデイ一ゼル機関に組込み、機
関回転数6000rpm。Next, it is made of spheroidal graphite cast iron (JIS standard FCD70), and the radially outer peripheral surface is plasma sprayed to a thickness of 15 mm.
Sprayed layer of Fe dispersed with 0μ Cr2O3 particles (Cr203 content Q40vo1%, average particle size of Cr2O3 particles, 10μ
, surface roughness 1.0 μRz), thermal sprayed layer of TiO2 particle-dispersed Fe (containing TiO2 particles 60vo1%, Ti
O! Average particle diameter: 4゜μ, surface roughness: 1.0μRz)
, or a sprayed layer of ZrO2 particle-dispersed Fe, CZrO2 particle content ff145vo1%, average particle size of ZrO2 particles 45μ
, a piston ring coated with a surface roughness of 1°0 μRz), and a piston as a comparative example that is not coated with a sprayed layer of a metal composite material dispersion-strengthened with metal oxide particles made of spheroidal graphite cast iron (JIS standard FCD70). Prepare the ring
These piston rings and the above-mentioned cylinder block were combined into a 4-cylinder 4-stroke diesel engine, and the engine rotation speed was 6000 rpm.
機関負荷フルロードにて200時間に亙る高速耐久試験
を行っな。A high-speed durability test was conducted for 200 hours under full engine load.
この試験の結果、ピストンリングが比較例のピストンリ
ングである場合には、シリンダボアにスカッフィングが
発生し、シリンダボアの摩耗量は30μと高い値であっ
たのに対し、ピストンリングが金属酸化物粒子分散強化
金属複合材料の溶射層にて被覆された球状黒鉛鋳鉄より
なるピストンリングの場合には、シリンダボアにスカッ
フィングは発生しておらず、ピストンリングの外周面及
びシリンダボアの摩耗量が2.0μ以下の非常に小さい
値であり、従って実施例のシリンダライナ及びピストン
リングは比較例に比して遥かに耐摩耗性に優れているこ
とが認められた。As a result of this test, when the piston ring was the piston ring of the comparative example, scuffing occurred in the cylinder bore and the wear amount of the cylinder bore was as high as 30μ, whereas the piston ring was found to have dispersion of metal oxide particles. In the case of piston rings made of spheroidal graphite cast iron coated with a sprayed layer of reinforced metal composite material, there is no scuffing in the cylinder bore, and the amount of wear on the outer peripheral surface of the piston ring and cylinder bore is 2.0μ or less. This is a very small value, and it was therefore recognized that the cylinder liner and piston ring of the example had much better wear resistance than the comparative example.
以上に於ては本発明を幾つかの実施例について詳細に説
明したが、本発明はこれらの実施例に限定されるもので
はなく、本発明の範囲内にて他の種々の実施例が可能で
あることは当業者にとって明らかであろう。Although the present invention has been described above in detail with reference to several embodiments, the present invention is not limited to these embodiments, and various other embodiments are possible within the scope of the present invention. It will be clear to those skilled in the art that
第1図乃至第5図はそれぞれ実施例1〜5の摩耗試験の
結果を示すグラフ、第6図は本発明よる摺動用部材の第
一の部材を構成する繊維強化金属複合材料の表面部の断
面を示す模式図、第7図は実施例6の焼付き試験の結果
を示すグラフ、第8図はピストンとピストンリングとの
組合せに対し適用された本発明による摺動用部材の一つ
の具体的実施例を示す解図的縦断面図、第9図は第8図
に示された実施例の要部を示す解図的拡大部分縦断面図
、第10図はピストンリング(トップリング)を拡大し
て示す解図的部分縦断面図である。
1・・・ピストン、2・・・側部外周面、3・・・シリ
ンダライナ、4・・・トップリング、5・・・セカンド
リング。
6・・・トップリング溝、7・・・セカンドリング溝、
8・・・オイルリング、9・・・リング溝、10・・・
ピストンヘッド、11・・・トップリング溝の下面、1
2・・・複合材料、13・・・トップランド、14・・
・セカンドランド、15・・・モリブデン溶射層、17
・・・トップリングの下面、21・・・アルミナ−シリ
カ繊維、22・・・アルミニウム合金、23・・・凹部
、24・・・表面部 許 出 願 人 トヨタ自動車
株式会社代 理 人 弁理士 明石 昌毅
第1図
(1□
第2図
第3図
第4図
第5図
第 6 区
第7図1 to 5 are graphs showing the results of the wear tests of Examples 1 to 5, respectively, and FIG. 6 is a graph showing the surface portion of the fiber-reinforced metal composite material constituting the first member of the sliding member according to the present invention. A schematic diagram showing a cross section, FIG. 7 is a graph showing the seizure test results of Example 6, and FIG. 8 is a specific example of a sliding member according to the present invention applied to a combination of a piston and a piston ring. An illustrative longitudinal cross-sectional view showing the embodiment; FIG. 9 is an enlarged partial longitudinal sectional view showing the main parts of the embodiment shown in FIG. 8; and FIG. 10 is an enlarged view of the piston ring (top ring). FIG. 1... Piston, 2... Side outer peripheral surface, 3... Cylinder liner, 4... Top ring, 5... Second ring. 6...Top ring groove, 7...Second ring groove,
8...Oil ring, 9...Ring groove, 10...
Piston head, 11... Bottom surface of top ring groove, 1
2...Composite material, 13...Topland, 14...
・Second land, 15...Molybdenum sprayed layer, 17
... Bottom surface of top ring, 21 ... Alumina-silica fiber, 22 ... Aluminum alloy, 23 ... Concave portion, 24 ... Surface portion Applicant Toyota Motor Corporation Representative Patent Attorney Akashi Changki Fig. 1 (1□ Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Ward Fig. 7
Claims (6)
二の部材とよりなる摺動用部材にして、前記第一の部材
の少なくとも前記第二の部材に対する摺動面部は40w
t%以上Al_2O_3、残部実質的にSiO_2なる
組成を有する体積率3〜30%のアルミナーシリカ系繊
維を強化繊維としアルミニウム合金若しくはマグネシウ
ム合金をマトリックスとする繊維強化金属複合材料にて
構成され、前記第二の部材の少なくとも前記第一の部材
に対する摺動面部はHv800以上の硬さを有する体積
率25〜85%の金属酸化物粒子を強化材とし鉄、ニッ
ケル、及びそれらを主成分とする合金よりなる群より選
択された金属をマトリックスとする粒子分散強化金属複
合材料の溶射層にて被覆された金属にて構成された摺動
用部材。(1) A sliding member consisting of a first member and a second member that are in contact with each other and slide relative to each other, and the sliding surface portion of at least the first member relative to the second member is 40W.
It is composed of a fiber-reinforced metal composite material in which the reinforcing fibers are alumina-silica fibers with a volume ratio of 3 to 30% having a composition of t% or more Al_2O_3 and the remainder substantially SiO_2, and the matrix is an aluminum alloy or a magnesium alloy. At least the sliding surface of the second member relative to the first member is reinforced with metal oxide particles having a hardness of Hv800 or higher and a volume ratio of 25 to 85%, and is made of iron, nickel, or an alloy containing these as main components. A sliding member made of a metal coated with a sprayed layer of a particle dispersion-strengthened metal composite material whose matrix is a metal selected from the group consisting of:
金属酸化物粒子はCr_2O_3粒子、TiO_2粒子
、ZrO_2粒子、Al_2O_3粒子、及びこれらの
二種以上の粒子の混合物よりなる群より選択された粒子
であることを特徴とする摺動用部材。(2) In the sliding member according to claim 1, the metal oxide particles are selected from the group consisting of Cr_2O_3 particles, TiO_2 particles, ZrO_2 particles, Al_2O_3 particles, and mixtures of two or more of these particles. A sliding member characterized by being made of selected particles.
於て、前記溶射層の表面粗さは1.2μFz以下である
ことを特徴とする摺動用部材。(3) The sliding member according to claim 1 or 2, wherein the thermal sprayed layer has a surface roughness of 1.2 μFz or less.
用部材に於て、前記第一の部材の摺動面が電解エッチン
グされることにより前記アルミナーシリカ系繊維の一部
が前記摺動面に露出しており且前記摺動面に露出する前
記アルミナーシリカル繊維の間の前記マトリックスの表
面に凹部が形成されていることを特徴とする摺動用部材
。(4) In the sliding member according to any one of claims 1 to 3, the sliding surface of the first member is electrolytically etched so that a portion of the alumina-silica fiber is removed. is exposed on the sliding surface, and a recess is formed on the surface of the matrix between the alumina silica fibers exposed on the sliding surface.
用部材に於て、前記摺動用部材は内燃機械であり、前記
第一の部材はシリンダライナであり前記第二の部材はピ
ストンリングであることを特徴とする摺動用部材。(5) In the sliding member according to any one of claims 1 to 4, the sliding member is an internal combustion machine, the first member is a cylinder liner, and the second member is a cylinder liner. is a sliding member characterized by being a piston ring.
用部材に於て、前記摺動用部材は内燃機関であり、前記
第一の部材はピストンであり、前記第二の部材はピスト
ンリングであることを特徴とする摺動用部材。(6) In the sliding member according to any one of claims 1 to 4, the sliding member is an internal combustion engine, the first member is a piston, and the second member is a piston. is a sliding member characterized by being a piston ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18626486A JPH0684525B2 (en) | 1986-08-08 | 1986-08-08 | Sliding member |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18626486A JPH0684525B2 (en) | 1986-08-08 | 1986-08-08 | Sliding member |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6342337A true JPS6342337A (en) | 1988-02-23 |
JPH0684525B2 JPH0684525B2 (en) | 1994-10-26 |
Family
ID=16185238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18626486A Expired - Fee Related JPH0684525B2 (en) | 1986-08-08 | 1986-08-08 | Sliding member |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0684525B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02145632A (en) * | 1988-11-25 | 1990-06-05 | Nippon Unicar Co Ltd | Flame retardant olefinic polymer composition highly filled with inorganic flame retardant |
JP2007046496A (en) * | 2005-08-08 | 2007-02-22 | Isuzu Motors Ltd | Sliding member for combustion chamber of internal combustion engine and manufacturing method |
-
1986
- 1986-08-08 JP JP18626486A patent/JPH0684525B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02145632A (en) * | 1988-11-25 | 1990-06-05 | Nippon Unicar Co Ltd | Flame retardant olefinic polymer composition highly filled with inorganic flame retardant |
JP2007046496A (en) * | 2005-08-08 | 2007-02-22 | Isuzu Motors Ltd | Sliding member for combustion chamber of internal combustion engine and manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
JPH0684525B2 (en) | 1994-10-26 |
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