Abstract
The influences of heat treatment, variation in Nb content, surface modification and counterface materials on the wear characteristics of new β type Ti-Nb-Ta-Zr alloys and conventional metallic implant alloy Ti-6Al-4V were investigated, using a reciprocal pin-on-disc wear device in a 0.9% NaCl solution. For the wear test of sliding on stainless steel disc, experimental results show that the wear resistance of Ti-29Nb-13Ta-4.6Zr and Ti-6Al-4V is insensitive to their mechanical properties, such as hardness and ultimate tensile strength. Increase in Nb content results in an improvement of the wear resistance of the β type alloy to some degree. The wear resistance of Ti-29Nb-13Ta-4.6Zr improved significantly after oxidation treatment, due to the presence of Nb2O5 oxide particles on the diffusion hardened surface of the alloy. For wear test of sliding on ultra-high molecular weight polyethylene (UHMWPE) and bone of pig, the wear losses of both Ti-Nb-Ta-Zr and Ti-6Al-4V are much less compared with that sliding on stainless steel and there is almost no wear on the surface of oxided Ti-29Nb-13Ta-4.6Zr.
Original language | English |
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Pages (from-to) | 869-876 |
Number of pages | 8 |
Journal | WEAR |
Volume | 257 |
Issue number | 9-10 |
DOIs | |
Publication status | Published - 2004 Nov |
Keywords
- Biomaterial
- Titanium-niobium-tantalum-zirconium alloy
- Wear
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry