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Tribological performance of hydrogenated diamond-like carbon coating deposited on superelastic 60NiTi alloy for aviation selflubricating spherical plain bearings

查看全文 作　　者：Yefei [1,2,3]ZHOU;Zhihao [1,3]CHEN;Zhonghui [4]HU;Lei [5]LI;Qingxiang [2,3]YANG;Xiaolei [1,2,3]XING 高影响力作者 机构地区：[1]College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;[2]State Key Laboratory of Metastable Materials Science&Technology,Yanshan University,Qinhuangdao 066004,China;[3]Aviation Key Laboratory of Science and Technology on Generic Technology of Self-Lubricating Spherical Plain Bearing,Yanshan University,Qinhuangdao 066004,China;[4]AVIC the First Aircraft Institute,Xi’an 710089,China;[5]Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China高影响力机构 出　　处：《Chinese Journal of Aeronautics》索引2022年第35卷第12期,共12页高影响力期刊 基　　金：co-supported by the National Natural Science Foundation of China(No.51905466);the Aeronautical Science Foundation of China(No.201945099002);the Natural Science Foundation of Hebei Province,China(Nos.E2021203191 and E2020203184);the Youth Top Talent Project of Hebei Province Higher Education,China(No.BJ2019058). 摘　　要：It is imperative to develop a novel matching of metallic substrate and self-lubricating coating for aircraft spherical plain bearing in a wide range of service conditions.As a new type of superelastic material,60NiTi alloy meets the performance requirements of aerospace bearing materials,but exhibits poor tribological performance,especially under the conditions of dry sliding friction.A Hydrogenated Diamond-Like Carbon(H-DLC)coating was deposited on the 60NiTi alloy to improve its tribological performance.The microstructure and mechanical behavior of the 60NiTi alloy and its H-DLC coating were explored.Results show that improvement of friction and wear performance of the H-DLC coating deposited on the 60NiTi substrate is mainly achieved by graphitization at the friction interface and the transfer film produced on the counterpart ball.The increased friction load leads to intensification of graphitization at the friction interface and formation of continuous and compact transfer film on the surface of the counterpart ball. 关 键 词：60NiTi Diamond-Like Carbon(DLC)coating GRAPHITIZATION Transfer film TRIBOLOGY
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