Microstructure and dry wear properties of Ti-Nb alloys for dental prostheses
The microstructure and properties of a series of binary Ti-Nb alloys for dental prostheses with niobium contents ranging from 5% to 20% were investigated. The experimental results indicate that the crystal structure and morphology of Ti-Nb alloys are sensitive to their niobium contents. When Nb content is 5%, the acicular a crystal grain is observed. When Nb content is 10%, the coarse equiaxed crystal grain and the fine, acicular a crystal grain are observed. When Nb content is 15%, only the α equiaxed crystal grain is observed. When the alloy contains 20% Nb, the equiaxed and dendritic a crystal grain are observed. For Ti-Nb alloys, the increase of Nb content modifies the microstructure of Ti-Nb alloys significantly and decreases their compression elastic modulus, in which Ti-20Nb alloy shows the largest compression strength and Ti-5Nb alloy shows the best plasticity. The dry wear resistance of Ti-Nb alloys against Grl5 ball was investigated on CJS111A ball-disk wear instrument. For Ti-Nb alloys, Ti-10Nb alloy shows a smallest steady friction coefficient, Ti-5Nb alloy shows the smallest wear depth and best wear resistance, and Ti-15Nb alloy shows the largest wear depth and worst wear resistance. The phenomenon of furrow cut happens and furrows form during wear tests.
Ti-Nb alloy microstructure dry wear resistance dental prostheses material
XU Li-juan XIAO Shu-long TIAN Jing CHEN Yu-yong HUANG Yu-dong
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China
国际会议
2009 Frontier Symposium of China Postductors on Materrials Science(2009年中国博士后材料科学前言论坛)
长沙
英文
639-644
2009-11-22（万方平台首次上网日期，不代表论文的发表时间）