Microstructure and Wear Behavior of Ti-6Al-4V Treated by Plasma Zr-alloying and Plasma Nitriding

作者：Chen Kai; Liu Xiaoping^*; Liu Xiaozhen; Meng Tianxu; Guo Qi; Wang Zhenxia; Lin Naimin

来源：Journal of Wuhan University of Technology-Materials Science Edition, 2016, 31(5): 1086-1092.

DOI：10.1007/s11595-016-1494-5

• Ti-6Al-4V
• plasma Zr-alloying
• plasma nitriding
• friction
• wear

A duplex treatment of plasma Zr-alloying and plasma nitriding was used to improve the tribological properties of Ti-6Al-4V. The microstructure of the Zr-N composite (alloyed) layer formed on Ti-6Al-4V and its hardness, friction and wear properties were investigated by using OM, SEM, GDOES, EDS, microhardness tester as well as ball-on-disk tribometer. The results of microstructural analysis show that the alloyed layer is compact and uniform and is mainly composed of ZrN, TiN0.3 and AlN. A very tiny adhesive and slight oxidation wear is the primary wear mechanism for the modified Ti-6Al-4V. The tribological property is improved significantly after the duplex treatment. The good combination of antifriction and wear resistance for modified Ti-6Al-4V is mainly attributed to the higher surface hardness of metal nitrides formed on the surface and enhanced supporting of the Zr-diffusing layer.

• 出版日期2016-10
• 单位太原理工大学