Study on the preparation and fretting behavior of bonded oriented MoS_(2)solid lubricant coating  

作　　者：Liangliang XIONG Mengxue WU Xiaoqiang FAN Minhao ZHU 

机构地区：[1]Key Laboratory of Advanced Technologies of Materials(Ministry of Education),School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China [2]Tribology Research Institute,School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China

出　　处：《Friction》2024年第11期2505-2518,共14页摩擦（英文版）

基　　金：the financial support of National Natural Science Foundation of China(Nos.52075458 and U2141211);Sichuan Science Foundation for Distinguished Young Scholars(No.2023NSFSC1957);the Analytical and Testing Center of Southwest Jiaotong University for support of the scanning electron microscopy(SEM)and Raman measurements.

摘　　要：The bonded MoS_(2)solid lubricant coating is an effective measure to mitigate the fretting wear of AISI 1045 steel.In this work,the amino functionalized MoS_(2)was protonated with acetic acid to make the MoS_(2)positively charged.The directional arrangement of protonated MoS2 in the coating was achieved by electrophoretic deposition under the electric field force.The bonded directionally aligned MoS_(2)solid lubricant coating showed high adaptability to various loads and excellent lubrication performance under all three working conditions.At a load of 10 N,the friction coefficient and wear volume of the coating with 5 wt%protonated MoS_(2)decreased by 20.0%and 37.2%compared to the pure epoxy coating,respectively,and by 0.07%and 16.8%than the randomly arranged MoS_(2)sample,respectively.The remarkable lubricating properties of MoS_(2)with directional alignment were attributed to its effective load-bearing and mechanical support,barrier effect on longitudinal extension of cracks,and the formation of a continuous and uniform transfer film.

关 键 词：bonded solid lubricant coating MoS_(2) fretting oriented alignment 

分 类 号：TH117[机械工程—机械设计及理论]