几种合成碳氢油的真空摩擦磨损行为研究  

Tribological Behaviors of Several Synthetic Hydrocarbons in Vacuum

作　　者：张松伟[1,2] 胡丽天[1] 王海忠[1] 冯大鹏[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]中国科学院北京研究生院,北京100049

出　　处：《摩擦学学报》2011年第6期569-574,共6页Tribology

基　　金：国家重点基础研究发展规划项目(973)(2011CB706603)资助;supported by the National Key Basic Research Program of China(973)(2011CB706603)

摘　　要：利用真空四球摩擦试验机系统考察了聚α-烯烃(PAO40,PAO10)和多烷基化环戊烷(MAC)2类合成碳氢油在空气、真空(压强小于6.0×10-4 Pa)和高纯氮气条件下的摩擦学性能,采用扫描电子显微镜(SEM)和非接触式三维表面轮廓仪观察了钢球摩擦表面的微观形貌,探讨2类合成碳氢油在空气、真空和高纯氮气中的润滑机理.结果表明:在空气中,由于连续的边界氧化膜和润滑油膜的存在,2类合成碳氢油的摩擦系数较低且能保持稳定,磨斑直径较小、磨痕表面光滑平整.在真空和高纯氮气中,由于润滑膜失效和剧烈温升,2类合成碳氢油的摩擦系数较高且剧烈波动,磨斑直径较大、表面可见明显的黏着磨损.The friction coefficient and wear resistance of a series of space liquid lubricants were investigated by the vacuum four-ball tribometer（VFBT） in air,vacuum（6.0 × 10-4 Pa） and high-purity nitrogen.The morphologies of the worn surfaces were observed using a scanning electron microscopy（SEM）.The tribological tests in the air show that the selected oil exhibited lower and more stable friction coefficients with smaller wear scar diameters and smooth worn surface comparing with the ones obtained in vacuum and high-purity nitrogen.It is supposed that the forming of continuous boundary oxide film and the lubricant film was responsible for the different tribological behavior.

关 键 词：真空四球试验机 合成碳氢油 摩擦磨损 表面张力 黏温性能 分子结构 

分 类 号：TH117.2[机械工程—机械设计及理论]