织构化表面NbSe2涂层的真空载流摩擦学行为  

Vacuum Current-Carrying Tribological Behavior of NbSe2 Coatings on Textured Surfaces

作　　者：杨洋 吉利[2] 鞠鹏飞 刘京周 徐州 裴露露 李红轩[2] 周惠娣[2] 陈建敏[2] 段文山[1] YANG Yang;JI Li;JU Pengfei;LIU Jingzhou;XU Zhou;PEI Lulu;LI Hongxuan;ZHOU Huidi;CHEN Jianmin;DUAN Wenshan(School of Physics and Electronic Engineering,Northwest Normal University,Gansu Lanzhou 730070,China;Key Laboratory of Science and Technology on Wear and Protection of Materials,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Gansu Lanzhou 730000,China;Shanghai Aerospace Equipments Manufacturer Co Ltd,Shanghai 200245,China)

机构地区：[1]西北师范大学物理与电子工程学院,甘肃兰州730070 [2]中国科学院兰州化学物理研究所中科院材料磨损与防护重点实验室,甘肃兰州730000 [3]上海航天设备制造总厂有限公司,上海200245

出　　处：《摩擦学学报》2022年第4期803-811,共9页Tribology

基　　金：中国科学院青年创新促进会(Y202084)资助。

摘　　要：针对航天器滑动电接触部件特殊的真空载流服役要求,利用建立的真空载流摩擦试验平台,探索铜基材织构化表面喷涂NbSe_(2)涂层作为空间新型导电润滑材料的可能性.研究条状和网状不同织构以及各自在不同织构密度条件下喷涂NbSe_(2)涂层的真空载流摩擦学性能和影响作用规律;对比现役电镀金涂层,探讨其在真空载流条件下摩擦学和电接触行为优势.结果表明:网格状较条状织构表面喷涂NbSe_(2)涂层的载流摩擦学性能更好,而且随织构密度的增加,减摩耐磨性能得到提高.织构间距为200μm的网格状织构表面喷涂的NbSe_(2)涂层展现出最佳的真空载流摩擦学性能.相较于现役的金电镀层,其在真空载流摩擦条件下展现出更加优异的摩擦学和电接触性能,摩擦系数由0.25降至0.05,接触电压与现役材料处于同一量级,电噪音波动明显改善,由0.09V降至0.04V.With the development of equipment and the continuous improvement of service requirements,the service life and other properties of space conductive lubrication materials have been shown to be significantly inadequate.At present,most of the studies on current-carrying friction and wear have been carried out in the atmospheric environment.However,in the vacuum environment,the friction and wear of metal materials or two-dimensional layered materials are very different from those in the atmosphere.In this paper,according to the special vacuum current carrying service requirements of the sliding electric contact parts of spacecraft,the possibility of NbSecoating sprayed on the textured surface of copper substrate as a new conductive lubrication material was explored and studied by using the established vacuum current carrying friction test platform.Through a series of literature investigation,the stripe and mesh texture morphology were selected as the substrate for preparing the coating.The tribological properties and influence laws of NbSecoating sprayed with strip texture and mesh texture were studied under different texture densities.The vacuum current carrying tribological properties and influence law of spray NbSecoating with different texture morphology and different texture density were studied.The tribological and electrical contact behavior of textured surface sprayed niobium selenide coating under vacuum current carrying condition was investigated compared to active electric goldplated coating.We hope to find a coating that maintains a low coefficient of friction and a stable current transmission in the harsh space environment while trying to replicate the actual conditions as much as possible.The results showed that the mesh texture was better than the strip texture coating effect,and with the increase of the texture density,the wear resistance of NbSecoating was improved.The NbSecoating sprayed on the surface with mesh texture with 200μm micron texture spacing showed the best tribological performance in va

关 键 词：滑动电接触 真空载流摩擦 导电润滑性能 NbSe2 表面织构 

分 类 号：TH1117.2[机械工程—机械设计及理论]