类金刚石薄膜固-液复合润滑体系真空摩擦学性能研究  

Tribological Properties of Diamond-Like-Carbon Coatings Lubricated with Vacuum Grease in Space Environment

作　　者：沙春生 李荣斌[2] 宋晓航 张珩 张如林[2] 王馨[2] 郭立杰 

机构地区：[1]上海航天设备制造总厂,上海200245 [2]上海电机学院机械学院,上海200245

出　　处：《真空科学与技术学报》2016年第2期136-140,共5页Chinese Journal of Vacuum Science and Technology

摘　　要：为了改善类金刚石(DLC)膜在真空环境下的摩擦磨损性能,以满足其在航天领域的应用需求。本文通过离子注入与沉积技术制备了显微硬度高于20 GPa、膜基附着力大于200 mN的掺钨DLC膜,并探讨了该薄膜与几种常用的真空润滑油脂:聚α-烯烃(PAO,201润滑油)、全氟聚醚(Z25)、LH201、Braycote 601EF、Braycote 602EF复合润滑体系的真空摩擦学性能。结果表明:DLC基固-液复合润滑体系能够有效改善DLC膜在高真空条件下的快速失效问题,是DLC膜在高真空环境下的一种有效延寿途径。相较于601EF、602EF,DLC-LH201复合润滑体系具有更好的真空摩擦磨损性能。The diamond-like-carbon（DLC） and W-doped DLC coatings were synthesized by plasma immersion ion implantation and deposition（PIIID） on substrates of Si and TC4 Ti alloy.The interfacial adhesion and nano-hardness of the W-DLC were found to be higher than 200 mN and 20 GPa,respectively.The influence of the liquid vacuum-lubricants,including but not limited to poly-α-olefin（PAO,201 oil）,perfluorinated polyether（Z25oil）,greases of LH201,Braycote 601 EF and 602 EF,on the stability and tribological properties of the W-DLC and DLC coatings was experimentally investigated.The results show that coverage of the vacuum grease and/or oil significantly improves the triboligical properties and increases the life-time of DLC and W-DLC coatings in high vacuum.In addition,when it comes to the reduction of friction coefficient and wear-rate of the DLC-based coatings,LH201 grease outperforms both 601 EF and 602 EF greases.

关 键 词：类金刚石膜 固-液复合润滑 摩擦磨损 真空环境 

分 类 号：TB43[一般工业技术]