Effects of heat treatment and load on frictional wear characteristics of β-Type Ti-Nb-Ta-Zr system alloy for biomedical applications in air and simulated body environment

Toshikazu Akahori, Mitsuo Niinomi, Manabu Watanabe, Masaaki Nakai, Hisao Fukui, Michiharu Ogawa

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The frictional wear characteristics of heat-treated Ti-29Nb-13Ta-4.6Zr (TNTZ) subjected to solution treatment (TNTZST) or aging treatments at 598, 673, and 723 K, respectively after solution treatment (TNTZ 598 K, TNTZ673 K, and TNTZ 723 K, respectively) and Ti-6Al-4V ELI (Ti64) subjected to aging treatment after solution treatment (T64STA) in air and simulated body environment (Ringer's solution) were investigated as a function of load in this study. Wear weight losses of TNTZST, TNTZ598 K, TNTZ673 K, TNTZ 723 K, and Ti64STA are smaller in Ringer's solution than in air under both low and high loading conditions (1.96 and 29.4N, respectively). This is considered to suggest that the frictional coefficient decreased because of the lubricant effect of Ringer's solution between the contact surfaces of specimen and zirconia ball as mating material. The wear losses of TNTZST, TNTZ598 K, TNTZ673 K, TNTZ723 K, and Ti64STA increase with increasing load in Ringer's solution. The wear losses of TNTZST, TNTZ598 K, TNTZ698 K, and TNTZ723 K at a low loading level are smaller than that of Ti64STA in Ringer's solution. On the other hand, the wear losses of TNTZ598 K and TNTZ673 K at a high loading level are larger than that of Ti64STA in Ringer's solution. This reason is that the transition point from sever wear to mild wear versus load is changed according to the materials.

Original languageEnglish
Pages (from-to)407-414
Number of pages8
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume71
Issue number4
DOIs
Publication statusPublished - 2007 Apr 1

Keywords

  • Beta type titanium alloy
  • Biomaterial
  • Frictional wear
  • Mild wear
  • Sever wear
  • Simulated body environment

ASJC Scopus subject areas

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

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