Lubrication performance of graphene in the sliding electrical contact interface  

作　　者：Lv WANG Qian TANG Tao LIANG Chenxu LIU Deen SUN Shu WANG Jingchuan LI Sam ZHANG Yonggang MENG Yuehua HUANG 

机构地区：[1]College of Engineering and Technology,Southwest University,Chongqing 400715,China [2]Center for Advanced Thin Films and Devices,School of Materials and Energy,Southwest University,Chongqing 400715,China [3]Chongqing City Management College,Chongqing 401331,China [4]State Key Laboratory of Tribology in Advanced Equipment,Tsinghua University,Beijing 100084,China [5]Zhengzhou Research Institute,Harbin Institute of Technology,Zhengzhou 450000,China

出　　处：《Friction》2024年第12期2760-2773,共14页摩擦（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.12302127);Natural Science Foundation of Chongqing,China(No.cstc2021jcyj-msxmX0044);the Tribology Science Fund of State Key Laboratory of Tribology of China(No.SKLTKF20B02);the Experimental Technology Research Project of Southwest University(No.SYJ2023003).

摘　　要：Electrical contact materials are increasingly widely used,but the existing electric contact lubricants still have lots of room for improvement,such as anti-wear performance and lubrication life.Due to the excellent electrical and lubrication properties,graphene shows great potential in lubricating the sliding electrical contact interface,but there is a lack of relevant research.Some researchers have studied the lubrication performance of graphene between the gold-coated/TiN-coated friction pair at an ultra-low current.However,the lubrication performance of graphene on more widely used electrical contact materials such as copper and its alloys under larger and more commonly used current or voltage conditions has not been reported.In this paper,we study the lubrication performance of graphene in the copper and its alloys sliding electrical contact interface under usual parameters,which is explored through four aspects:different substrates-copper and brass,different test methods-constant voltage and constant current,different normal loads and durability test.The experiments demonstrate that graphene can significantly reduce the friction and wear on brass and copper under the above test methods and parameters,with low contact resistance at the same time.Our work is expected to provide a new lubricant for electrical contact materials and contribute to enriching the tribological theory of graphene.

关 键 词：GRAPHENE sliding electrical contact COPPER FRICTION-REDUCING ANTI-WEAR low-contact resistance 

分 类 号：TH117[机械工程—机械设计及理论]