Conductive and tribological properties of TiN-Ag composite coatings under grease lubrication

作     者：Feihu LIN Yanqiu XIA Xin FENG Feihu LIN;Yanqiu XIA;Xin FENG

作者机构：School of Energy Power and Mechanical EngineeringNorth China 

出 版 物：《Friction》 (摩擦（英文版）)

年 卷 期：2021年第9卷第4期

页      面：774-788页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Natural Science Foundation of Beijing Municipality(2172053) the National Natural Science Foundation of China(51575181)。 

主　　题：silver tribology contact resistance lubricating grease 

摘      要：TiN-Ag composite coatings were prepared by pulsed bias arc ion plating.X-ray diffraction(XRD)and energy dispersive X-ray spectroscopy(EDS)were applied to analyze the compositions of the coatings.Tribological properties of the coatings were studied using an MFT-R4000 ball-on-disk friction tester in the presence of lubricating greases containing multilayer graphene.Scanning electron microscopy(SEM),Raman spectroscopy,and X-ray photoelectron spectroscopy(XPS)were used to analyze the worn surface compositions of the lubricating films.The results show that with the decrease in Ag in the film,hardness increased but electrical conductivity decreased.The coating with 10 at%Ag content shows the best friction-reducing and anti-wear properties,which can be attributed to the moderate content of Ag embedded in the TiN crystal gap that enhanced the grain bonding force to improve the anti-wear and self-lubricating ability.Graphene can be adsorbed on the coating as a solid lubricant.