摘要
良好的润滑性是确保空间运动部件在轨工作寿命和可靠性的关键因素之一。目前空间运动机构多采用单一的固体润滑或油脂润滑,但两种方式均存在缺陷,无法满足新一代长寿命、高可靠航天器的需求。为延长空间润滑的寿命及提高其可靠性,本实验研究了类金刚石(DLC)薄膜的沉积工艺参数——丁烷、氩气流量以及负偏压和溅射功率对全氟聚醚润滑剂(PFPE)油脂条件下DLC薄膜的摩擦磨损性能与行为的影响机制,在此基础上确定了DLC薄膜的最佳沉积工艺。对DLC-PFPE固液复合润滑体系进行摩擦磨损性能测试,测得大气环境下其摩擦系数不高于0.15,摩擦磨损寿命不短于2.1×10^6 r;真空环境下摩擦系数小于0.1,摩擦磨损寿命不短于2.11×10^6 r。
Good lubrication is the key to ensure the life and reliability of space moving parts.At present,space motion mechanisms use a single solid lubrication or grease lubrication which has its own defects.In this paper,aiming to improve the life and reliability of space lubrication,effects of deposition process parameters on the friction and wear properties and behavior of diamond-like carbon(DLC)films under PFPE grease lubrication conditions were investigated.Based on the above research,the optimal deposition process of the DLC film was determined.The friction and wear test of solid-liquid composite lubrication system was carried out.Result showed that the friction coefficient was less than 0.15,the friction life was more than 2.1×10^6 r at atmospheric environment;and the friction coefficient was less than 0.1,the friction life was more than 2.11×10^6 r at vacuum environment.
作者
徐骏
朱立坚
刘刚
宋炳坷
XU Jun;ZHU Lijian;LIU Gang;SONG Bingke(Shanghai Institute of Spacecraft Equipment,Shanghai 200240,China;Shanghai Xinli Power Equipment Institute,Shanghai 200125,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2020年第S01期567-571,共5页
Materials Reports
基金
国家重点研发计划(2017YFA0204600)
上海航天自主研发项目(ZY2018-65)。
关键词
DLC-PFPE
沉积工艺
固液复合润滑
协同效应
摩擦磨损
DLC-PFPE
deposition process
solid-liquid composite lubrication
synergistic effect
friction and wear
