Author:
Kao Wen-Hsien,Su Yean-Liang,Horng Jeng-Haur,Yang Shu-Er
Abstract
Purpose
This paper aims to investigate the tribology, corrosion resistance and biocompatibility of high-temperature gas-nitrided Ti6Al4V alloy.
Design/methodology/approach
The tribological properties were studied by reciprocating wear tester. The corrosion resistance was evaluated by using potentiodynamic polarization test. The purified mouse leukaemic monocyte macrophage cells are used to investigate the biocompatibility.
Findings
The results show that the nitriding treatment leads to a significant improvement in the hardness and tribological properties of Ti6Al4V alloy. Specifically, compared to untreated Ti6Al4V, the hardness increases from 3.24 to 9.02 GPa, while the wear rate reduces by 12.5 times in sliding against a Ti6Al4V cylinder and 19.6 times in sliding against a Si3N4 ball. Furthermore, the nitriding treatment yields an improved corrosion resistance and a biocompatibility similar to that of untreated Ti6Al4V.
Originality/value
The nitrided Ti6Al4V alloy is an ideal material for the fabrication of load-bearing artificial implants.
Subject
Surfaces, Coatings and Films,General Energy,Mechanical Engineering
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