High-temperature wear behaviors of MoSi2 under different loads
MoSi2 was prepared by SHS,pressed at room-temperature and then vacuum sintered at 1 500 ℃ for 1 h.The tribological properties of MoSi2 against Al2O3 were investigated by using an XP-5 type High Temperature Friction and Wear Tester.Micrographs and phases of the worn surface of MoSi2 were observed by SEM with EDS and X-ray diffraction.The results show that the wearing process of MoSi2 at high temperature exists three stages: running-in,interim and steady periods.MoSi2 exhibits preferable wear resistance when the load is lower than 50 N.Adhesion and oxidation wear exists widely at elevated temperature; however besides these,with increasing the load,the main wear mechanisms of MoSi2 could be changed from adhesion,plastic forming to fatigue fracture in turn.
MoSi2 tribological property wear mechanism
HU Xiao-ping TAN Wei-cheng TANG Si-wen ZHANG Hou-an HUANG Zhi-chu
School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China;Ad School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China Advanced Materials Synthesis and Applied Technology Laboratory,Hunan University of Science and Techn
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）