干摩擦条件下铜-石墨复合材料与ZQAl9-4铝青铜的磨损图研究  

Dry Sliding Wear Map of the Copper-graphite Composite and the Copper Alloy ZQAl9-4

作　　者：马文林[1,2] 吕晋军[1] 

机构地区：[1]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000 [2]中国科学院研究生院,北京100039

出　　处：《摩擦学学报》2008年第5期389-393,共5页Tribology

基　　金：国家自然科学基金资助项目(50675216);中国科学院兰州化学物理研究所固体润滑国家重点实验室基金资助项目(0501)

摘　　要：考察了铜-石墨复合材料和商品ZQA l9-4铝青铜材料在干摩擦条件下的室温摩擦磨损性能,得出了两者的磨损图.结果表明：铜-石墨复合材料表现出优异的减摩性能;铜-石墨材料的磨损体系可以分为轻微磨损（磨损率小于1×10^-4mm^3/m）、中等磨损（1×10^-4～1×10^-3mm^3/m）和严重磨损（磨损率大于1×10^-3mm^3/m）3个区域,而ZQAl9-4铝青铜的磨损体系可分为轻微磨损、中等磨损和咬合3个区域;在载荷小于5 N,滑动速度处于0.005～0.05 m/s时,铜-石墨复合材料表现出比铝青铜更优异的耐磨性.Dry sliding wear tests were performed on a copper-graphite composite and a copper alloy ZQAl9-4 within a wide speed range of 0. 005 - 3. 000 m/s, and the wear rate map for two materials was established. Copper-graphite composite showed excellent anti-friction property compared with ZQAl9-4. Three wear regimes, namely mild wear regime with volume wear rate less than 1 ×10^-4mm^3/m, moderate wear regime with volume wear rate between 1×10^-4mm^3/m to 1×10^-3mm^3/m and severe wear regime with volume wear rate higher than 1 ×10^-3mm^3/m were classified and observed. Copper-graphite composite possessed the three wear regimes while ZQAl9-4 showed mild and moderate wear regimes. Although there was no severe wear regime for ZQAl9-4, seizure occurred as the load and sliding speed reached a critical value. At load lower than 5 N, the wear resistance of copper-graphite composite was higher than that of ZQAl9-4 within a speed range of 0. 005 ～0.050 m/s.

关 键 词：铜-石墨复合材料 铝青铜ZQAl9-4 磨损图 

分 类 号：TH117.3[机械工程—机械设计及理论]