Microstructure and wear behavior of Ti-6Al-4V treated by plasma Zr-alloying and plasma nitriding

详细信息    查看全文

• 作者：Kai Chen 陈凯 ; Xiaoping Liu 刘小萍 ; Xiaozhen Liu…
• 关键词：Ti ; 6Al ; 4V ; plasma Zr ; alloying ; plasma nitriding ; friction ; wear
• 刊名：Journal of Wuhan University of Technology--Materials Science Edition
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：31
• 期：5
• 页码：1086-1092
• 全文大小：1,191 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Chinese Library of Science
  
• 出版者：Wuhan University, co-published with Springer
• ISSN：1993-0437
• 卷排序：31

文摘

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, TiN_0.3 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.