Difference of wear behavior between Ti-29Nb-13Ta-4.6Zr alloy and Ti-6Al-4V ELI alloy for biomedical applications

Masaaki Nakai, Mitsuo Niinomi, Junko Hieda, Ken Cho, Yoon Seok Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


A biomedical β-type titanium, Ti-29Nb-13Ta-4.6Zr alloy (TNTZ), exhibits good biological and mechanical biocompatibilities due to containing non-toxic elements and lower Young's modulus than that of a conventional (α+β)-type titanium alloy, Ti-6A1-4V ELI alloy (Ti64). One of the expected applications for TNTZ is spinal fixation applications. However, screws and rods are contacted each other in this kind of application, while titanium alloys generally exhibit poor wear resistance. Therefore, the wear characteristics of TNTZ and Ti64 were investigated in this study. Balls and discs made of TNTZ and Ti64 were prepared for a ball-on-disc wear test. As the results of microstructural analysis, it was found that the morphologies of wear tracks and debris of TNTZ are different from those of Ti64 because different wear mechanism is predominant in each alloy.

Original languageEnglish
Title of host publicationTMS 2014 - 143rd Annual Meeting and Exhibition, Supplemental Proceedings
PublisherMinerals, Metals and Materials Society
Number of pages4
ISBN (Print)9781118889725
Publication statusPublished - 2014
Externally publishedYes
Event143rd Annual Meeting and Exhibition, TMS 2014 - San Diego, CA, United States
Duration: Feb 16 2014Feb 20 2014

Publication series

NameTMS Annual Meeting


Other143rd Annual Meeting and Exhibition, TMS 2014
Country/TerritoryUnited States
CitySan Diego, CA


  • Metal-to-metal
  • Titanium alloy
  • Wear

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys


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