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.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
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~~
