摘要
对热压烧结法制得的铜-石墨-二硫化钼-二硫化钨纳米管自润滑复合材料进行电摩擦磨损试验,研究带电摩擦磨损过程中复合材料的摩擦因数、磨损率和接触电压降的变化。用扫描电子显微镜、X射线衍射仪等方法对复合材料的显微组织、磨损表面形貌、物相等进行表征。结果表明:电流密度对材料的摩擦与磨损特性影响很大,随电流密度增大,复合材料的摩擦因数及磨损率显著提高。接触电压降在磨损初始阶段较小,随试验进行其值逐渐增大并趋向稳态。接触电压降与电流密度呈非线性变化关系。
Cu-graphite-MoS2-WS2 nanotubes self-lubricating composite materials were fabricated by hot pressing method.The friction coefficients,wear rates and contact voltage drops of the composites were investigated.Microstructure and phase of the composites,tribo-films formed on the worn surfaces were characterized by scanning electron microscope,X-ray diffractometer.Results illustrate that current density has a great influence on the friction properties.The friction coefficients and wear rates increase remarkably with the increasing current density.The contact voltage drops are low in the initial stage,and then increase to a stable value.The contact voltage drops increase disproportionately to the increasing current density.
作者
黄仕银
HUANG Shiyin(Anhui Industry Polytechnic College,Tongling 244000,China)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2020年第2期77-80,共4页
Ordnance Material Science and Engineering
关键词
铜基自润滑复合材料
摩擦因数
磨损率
接触电压降
电流密度
Cu-based self-lubricating composite
friction coefficient
wear rate
contact voltage drop
current density
