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Effect of thermal oxidation on the wear behavior for CP-Ti

Wei Wei, Fei Sun, Zheng-Shou Zhou, Jing Hu

Commercially pure titanium(CP-Ti) TA2 sampleswere thermally oxidized at various temperatures and duration. The wear behaviors and the surface hardness of the samples before and after thermal oxidationwere investigated. The worn surface morphology was observed by means of SEM examinations. The results showed that thermal oxidation could significantly increase the surface hardness and enhance the wear resistance of TA2. It was found that 700°C and 240 min were the optimum parameter of thermal oxidation.