Tribological properties of plasma-sprayed nickel alloy matrix self-lubricating coating at elevated temperatures

作     者：Wen-Sheng Li Yang Sun Wei Hu Sheng-Yu Zhu Hai-Min Zhai Jun Yang Xiang-Juan Fan Wei-Min Liu Wen-Sheng Li;Yang Sun;Wei Hu;Sheng-Yu Zhu;Hai-Min Zhai;Jun Yang;Xiang-Juan Fan;Wei-Min Liu

作者机构：State Key Laboratory of Advanced Processing and Recycling of Nonferrous MetalsSchool of Materials Science and EngineeringLanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Solid LubricationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第7期

页      面：1844-1850页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0825[工学-航空宇航科学与技术] 0702[理学-物理学] 

基　　金：the International Science and Technology Cooperation Program of China(No.2015DFR51090) the National Program on Key Research Project of China(No.2016YFE0111400) 

主　　题：Coating Tribological behavior High temperature Self-lubricating 

摘      要：A nickel alloy matrix high-temperature self-lubricating coating(77.5 wt%(Ni-Cr-Mo-Al)-12.5 wt%Ag-10 wt%BaF2/CaF2)was prepared by plasma spraying *** show that the Vickers microhardness of coating is(2.9±0.5)GPa,and the average bonding strength is about(35.6±0.5)*** coating rubbing against Inconel 718 superalloy pin exhibits superior tribological performance with coefficient of friction(COF)of below 0.25 and wear rate of 8.2×10^(-5)-15.2×10^(-5)mm^(3)·N^(-1)·m^(-1)at a wide temperature range from 25 to 800℃,and the COF and the wear rate are slightly reduced with temperature *** low COF and wear rate were attributed to the synergistic effects of Ag,BaF_(2)/CaF_(2),Ag2MoO_(4)and BaMoO_(4).