两种含氟空间润滑油的真空摩擦磨损行为研究  

Tribological Behaviors of Two Kinds of Fluorine-containing Space Lubricating Oil 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》2012年第6期619-625,共7页Tribology

基　　金：国家重点基础研究发展规划项目(973)(2011CB706603);国家自然科学基金(51175492 and 51175493)资助~~

摘　　要：利用真空四球摩擦试验机系统考察了全氟聚醚(Z25)和甲基氟氯苯基硅油(FCPSO)两种空间润滑油在空气、真空和高纯氮气气氛中的摩擦磨损性能,采用扫描电子显微镜(SEM)和X射线光电子能谱仪(XPS)分别分析了磨损表面的微观形貌及典型元素的化学状态。结果表明:Z25在3种气氛中均表现出低摩擦高磨损的特性,且真空中摩擦系数最低,这主要是由于Z25对摩擦副具有润滑和腐蚀的双重作用;FCPSO在3种气氛中均表现出高摩擦低磨损的特性,且真空中磨斑直径最小,这主要是由于FCPSO在摩擦副表面形成了FeCl2边界保护膜.The friction coefficient and wear resistance of two kinds of space liquid lubricants named perfluoropolyether （ Z25 ） and chlorinated - phenyl and tfifluorinated - butyl with methyl terminated silicone oil （FCPSO） were investigated by the vacuum fourball tribometer （VFBT） in air, vacuum and high- purity nitrogen. The morphologies and element analysis of the worn surfaces were observed using scanning electron microscopy and x - ray photoelectron spectroscopy, respectively. The results of the tribological tests in the three kinds of atmospheres all show that, due to both the lubricating and corrosive effects of Z25 to steel, it exhibited lower friction coefficients with larger wear scar diameters. Comparing Z25, FCPSO exhibited higher friction coefficients with smaller wear scar diameters, which was mainly because of the anti - wear boundarv film formed hv FCPSO.

关 键 词：PFPE FCPSO 腐蚀磨损 空间润滑 摩擦磨损机理 反应活性 

分 类 号：TH117.2[机械工程—机械设计及理论]