铜基自润滑复合材料的电摩擦磨损性能研究  

Study on Electrical Wear Performance of Cu-based Self-lubricating Composite

作　　者：黄仕银 HUANG Shiyin(Electromechanical Engineering Institute,Anhui Industry Polytechnic,Tongling 244000,China)

机构地区：[1]安徽工业职业技术学院机电工程学院,安徽铜陵244000

出　　处：《新乡学院学报》2022年第3期44-49,共6页Journal of Xinxiang University

摘　　要：为研究铜基自润滑复合材料的电摩擦磨损性能,通过电摩擦磨损实验对用热压成型法制得的铜-石墨-MoS_(2)复合材料试样进行了测试,分别测试了空气和真空环境下固体润滑剂石墨和MoS_(2)成分对复合材料电摩擦磨损性能的影响:并用X射线光电子能谱仪(XPS)和扫描电镜(SEM)对复合材料试样磨损表面形成的润滑膜进行了表征。结果表明,复合材料润滑性能主要受其磨损表面固体润滑膜的连续性和完整性影响;体积含量为15%石墨和15%MoS_(2)的试样在空气和真空环境中均具有较好的减摩耐磨性能,但在不同环境中,其表面形成的润滑膜成分差别较大;随着润滑膜的逐渐形成,摩擦副材料接触电压降逐步升高,并趋于稳定,接触电压降与电流密度不成正比例变化。In order to study the electric friction and wear performance of cu-based self-lubricating composites,Cu-graphite-MoS_(2) composites prepared by hot-pressing were tested by electric friction and wear experiments.The effects of MoS_(2) and graphite contents on electrical friction and wear properties were investigated in air and vacuum environment,respectively.Tribo-films that formed on the abrasion surfaces were analyzed by XPS and SEM.Results illustrated that the continuity and integrity of tribo-films on the abrasion surface of composite are the main factors that affect the antifriction and wear resistance.Samples containing 15% graphite and 15% MoS_(2) have a wide field of application possessed superior tribological properties both in air and vacuum conditions.However,the tribo-films formed on the abrasion surfaces of the sample were greatly discrepant in composition under different test conditions.Contact voltage drops of friction pair increased gradually with the formation of tribo-films and stabilized at last,they are not positively related with current density.

关 键 词：铜基自润滑复合材料 摩擦系数 磨损率 润滑膜 接触电压降 

分 类 号：TH117.1[机械工程—机械设计及理论]