Tribological Studies of Different Bioimplant Materials for Orthopaedic Application

Abstract

This paper aims to introduce the bioimplant material by considering the tribological properties used in biomedical engineering. Sliding wear performances of four different materials like CoCrMo, SS316L, TIGR2 and TIGR5 are compared in this study. Tribological behaviour was studied considering the Specific Wear rate (SWR), coefficient of friction (COF) and the presiding wear mechanism under dry and wet conditions. The wear test was carried out to check the properties of orthopaedic bioimplant substrate materials. Our results revealed that the COF of TIGR5, TIGR2 under dry and wet test was found between the CoCrMo and SS316L. The experimental result showed that CoCrMo having less COF and SS316L having more COF compare to other bioimplant materials. After the wear test, the weight loss and SWR of CoCrMo were found to be less as compared to other materials considered in this study. The worn surface of different substrate materials was analysed with the help of SEM. In experimental graph obtained from WINDUCOM 2010 machine software, the minute fluctuation was observed in the friction curve and COF curve during the wet test.