J4 ›› 2013, Vol. 10 ›› Issue (1): 84-89.doi: 10.1016/S1672-6529(13)60202-4

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Yong Luo, Li Yang, Maocai Tian   

  • 收稿日期:2012-09-10 修回日期:2012-11-10 出版日期:2013-01-10 发布日期:2013-01-10
  • 作者简介:Yong Luo, Li Yang, Maocai Tian

Influence of Bio-Lubricants on the Tribological Properties of Ti6Al4V Alloy

Yong Luo, Li Yang, Maocai Tian   

  1. School of Material Science and Engineering, China University of Mining and Technology, Xuzhou 221116, P. R. China
  • Received:2012-09-10 Revised:2012-11-10 Online:2013-01-10 Published:2013-01-10
  • Contact: Yong Luo E-mail:sulyflying@yahoo.com
  • About author:Yong Luo, Li Yang, Maocai Tian

Abstract:

Titanium alloy is one of the best materials for biomedical applications due to its superior biocompatibility, outstanding corrosion resistance, and low elastic modulus. However, the friction and wear behaviors of titanium alloys were sensitive to the environment including lubrication. In order to clarify the wear mechanism of titanium alloy under different lubrications including deionized water, physiological saline and bovine serum, the friction and wear tests were performed between Ti6Al4V plates and Si3N4 ball on a universal multi-functional tester. The friction and the wear rate of titanium alloy were measured under dry friction and three different lubrication conditions. The worn surfaces were examined by scanning electron microscopy. The results revealed that under the dry friction, the wear resistance of titanium alloy was the worst since the wear mechanism was mainly the combination of abrasive wear and oxidation wear. It was also found that Ti6Al4V alloy had low friction coefficient and wear rate under three lubrication conditions, and its wear mechanism was adhesive wear.

Key words: titanium alloy, lubrication, friction coeffitient, wear mechanism