有无电流条件下温度对碳/铜摩擦副摩擦磨损性能的影响  

Effect of Temperature on Friction and Wear Behaviors of Carbon/Copper with and without Electric Current

作　　者：丁涛[1] 王鑫[1] 陈光雄[1] 朱旻昊[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《中国机械工程》2010年第7期843-847,共5页China Mechanical Engineering

基　　金：国家重点基础研究计划资助项目(2007CB714703);国家科技支撑计划资助项目(2009BAG12A01-D06-1);西南交通大学博士生创新基金资助项目(A0320502050902)

摘　　要：通过销-盘摩擦磨损试验,研究了碳/铜摩擦副在有无电流条件下的摩擦学性能。结果表明:试验过程中摩擦副温度不断地升高,且有电流时摩擦副温度比无电流时高,滑板材料的磨损量随着温度的升高而增大;当无电流通过时,摩擦因数随温度的升高先增大后减小,当有电流通过时,摩擦因数随温度的升高而减小。观察碳滑板磨损前后表面形貌发现:磨损表面随摩擦副温度的升高变得越来越光滑;当无电流通过时,磨粒磨损和黏着磨损是主要磨损类型,当有电流通过时,磨损类型以氧化磨损和电弧烧蚀为主。碳滑板材料磨损表面EDS分析发现,元素转移和氧化现象在磨损过程中时有发生。Through a series of experimental tests on a pin--on--disc tester, the tribology behavior of carbon/copper pair with and without electric current was verified. The results indicate that the temperature of frictional couple rises continuously in the process of friction and wear, and the wear valume of sliding strip increases with increasing of temperature. And the temperature of the frictional couple with electric current is higher than that without electric current. Without electric current, the friction coefficient firstly increases and then decreases with increasing of the temperature. With electric current, the friction coefficient decreases gradually with increasing of the temperature. Through observing the surface topography of the carbon sliding strip before and after wear, it is found that the wear surface becomes smoother and smoother with increasing of the temperature. Abrasive and adhe- sive wear dominate during no electric current. Oxidation wear and arc erosion dominate under electric current. By the EDS（energy dispersive spectrometer） analysis on worn carbon sliding strip, it can be found that element transfer and oxidation occur irregularly in the process of the friction and wear.

关 键 词：电磨损 摩擦副温度 摩擦因数 磨损量 

分 类 号：TH117[机械工程—机械设计及理论]