Tribological behavior and microstructural evolution of lubricating film of silver matrix self-lubricating nanocomposite  

作　　者：Xiao KANG Shuang YU Hailin YANG Yang SUN Lei ZHANG 

机构地区：[1]State Key Laboratory for Powder Metallurgy,Central South University,Changsha 410083,China [2]Shanghai Institute of Astronautical Systems Engineering,Shanghai 201108,China

出　　处：《Friction》2021年第5期941-951,共11页摩擦（英文版）

基　　金：The authors would like to thank National Natural Science Foundation of China(Grant No.51674304)for the financial support provided.

摘　　要：The aim of this study is to fabricate the nanocomposite with low friction and high wear resistance using binary solid lubricant particles.The microstructure and tribological performance of the nanocomposite are evaluated,and the composition and film thickness of the lubricating film are observed and analyzed by scanning electron microscopy(SEM)and X‐ray photoelectron spectroscopy(XPS).The nanocomposite exhibited improved tribological properties with a friction coefficient as low as 0.12 and a low wear rate of 2.17×10^(-6) mm^(3)/(N∙m)in high‐purity nitrogen atmosphere.Decreasing sliding speed can increase lubricating film thickness,and the thickest lubricating film is approximately 125 nm.As the film thickness of the lubricating film exceeded 90 nm,the friction coefficient curves became smooth.In compared with WS_(2),MoS_(2) can be more effective in forming the transfer layer on the worn surfaces at the initial stage of the tribological process.

关 键 词：lubricating film metal matrix self‐lubricating composite tribological behavior binary solid lubricants X‐ray photoelectron spectroscopy(XPS) 

分 类 号：TH117.22[机械工程—机械设计及理论]