Analysis of Microscopic Wear Mechanism of Ceramics Based on Friction Tests in the SEM

基于SEM摩擦测试的陶瓷微观磨损机理分析

• 批准号: 06650159
• 负责人: HOKKIRIGAWA Kazuo
• 金额: $ 1.47万
• 依托单位: Yamagata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650159/
• 关键词: Ceramics; Tribology; Wear; Wear Rate; Wear Mechanism; 炭化けい素; ジルコニア

The purpose of this investigation is to analyze microscopic wear mechanism of ceramic materials. Following results were obtained ;(1) Microscopic wear modes of ceramics can be classified into following three modes ;1) flake formation : This is the severest wear mode of ceramics by macroscopic surface crack propagation.2) powder formation : This is caused by microscopic surface crack propagation.3) plowing : This is mild wear of ceramics.(2) The condition for occurrence of flake formation can by expressed by using new dimensionless parameter Sc (=Pmax (Rmax) ^<1/2>/K_<IC>) where Pmax is maximum hertzian contact pressure, Rmax is maximum surface roughness and K_<IC> is fracture toughness.(3) The condition for occurrence of powder formation cab be expressed by using new dimensionless parameter Sc^* (=Hv (Rmax) ^<1/2>/K_<IC>) where Hv is Vickers hardness, Rmax is maximum surface roughness and K_<IC> is fracture toughness.(4) New wear equation can be obtained for estimation of wear rate of ceramics based on the above results.

本研究旨在分析陶瓷材料的微观磨损机理。结果表明：(1)陶瓷的微观磨损模式可分为以下三种模式：1)剥落：这是陶瓷宏观表面裂纹扩展引起的最严重的磨损模式；2)粉末形成：这是由微观表面裂纹扩展引起的；3)犁削：这是陶瓷的轻微磨损.(2)产生剥落的条件可以用新的无量纲参数SC(=Pmax(Rmax)^&lt；1/2&gt；/K_lt；IC&gt；)来表示，其中Pmax是最大赫兹接触压力，Rmax是最大表面粗糙度和K&lt；(3)可用新的无量纲参数SC^*(=Hv(Rmax)^&lt；1/2&gt；/K_&lt；IC&gt；)来表示发生粉化的条件，其中Hv为维氏硬度，Rmax为最大表面粗糙度，K&lt；IC&gt；为断裂韧性。

项目成果

T.Kato, K.Hokkirigawa, T.Fukuda and J.Takahashi: "The Analysis of Wear Mechanisms of Hard Films Coated on Aluminium Alloys by Using a CCD Microscope Tribosystem" Proc.Int.Tribology Conf. (in press).

T.Kato、K.Hokkirikawa、T.Fukuda 和 J.Takahashi：“使用 CCD 显微镜摩擦系统分析铝合金上硬膜的磨损机制”Proc.Int.Tribology Conf。

H.Kitsunai and K.Hokkirigawa: "Transitions of Microscopic Wear Mode of Silicon Carbide Coatings by Chemical Vapor Deposition during Repeated Sliding Observed in a Scanning Electron Microscope Tribosystem" Wear. 185. 9-15 (1995)

H.Kitsunai 和 K.Hokkirikawa：“在扫描电子显微镜摩擦系统中观察到的重复滑动过程中化学气相沉积碳化硅涂层微观磨损模式的转变”磨损。

K.Hokkirigawa: "Advanced Techniques for In-situ Observations of Microscopic Wear Processes" Surface Modification Technologies. 8. 93-105 (1994)

K.Hokkirikawa：“微观磨损过程原位观察的先进技术”表面改性技术。

T.Kato, K.Hokkirigawa, T.Fukuda and J.Takahashi: "The Analysis of Wear Mechanisms of Hard Films Coated on Aluminium Alloys by Using a CCD Microscope Tribosystem" Proc.Int.Tribology Conf.(印刷中).

T. Kato、K. Hokkirikawa、T. Fukuda 和 J. Takahashi：“使用 CCD 显微镜摩擦系统分析铝合金涂层的磨损机制”Proc。

T.Kato,K.Hokkirigawa,T.Fukuda and J.Takahashi: "The Analysis of Wear Mechanisms of Hard Films Coated on Aluminium Alloys by Using a CCD Microscope Tribosystem" Proc. Int. Tribology Conf.(印刷中).

T. Kato、K. Hokkirikawa、T. Fukuda 和 J. Takahashi：“使用 CCD 显微镜摩擦系统分析铝合金涂层的磨损机制”Proc。