Tribological Behaviors of Ti6Al4V with Surface Plasma Molybdenized
This paper was directed at improving the wear resistance of titanium alloy Ti6Al4V by double-glow plasma surface alloying (DPSA) technology. A molybdenized layer was successfully formed on Ti6Al4V by the DPSA treatments. The microstructure, composition distribution, phase structure and hardness were analyzed by SEM/EDS, XRD and vickers micro-hardness tester. The molybdenized layer was composed of Mo-deposited layer and Mo-diffusing layer. The average surface micro-hardness of the surface modified layer was 1170.8 HV0.1, which was much higher than that of the Ti6Al4V substrate. Tribological characterization was carried out by the ball-on-disc tribometer at room temperature and 500℃. The molybdenized layer significantly reduced the wear rate of the Ti6Al4V alloy，which is only about 6.6% and 4.9% of those of the untreated specimens at room temperature and 500 , ℃ respectively. Due to the good self-lubricating effect of Mo elements at high temperature conditions, the friction coefficient and wear rate of the molybdenized layer were both reduced at 500℃, compared to at room temperature.
Nengjun Ben Wenping Liang Beilei Ren Qiang Miu Pingze Zhang
School of Material Science and Technology, Nanjing University of Aeronautics and Astronautics,Nanjing, China, 210016
国际会议
桂林
英文
1-6
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）