Abstract
A novel method of thermal oxidation to improve wear resistance of commercial pure Ti has been compared with conventional method of thermal oxidation. Oxygen diffusion treatment has been carried out on Ti under a reductive condition at a range of 800–1000°C for 3 h. The influence of both processes on the nature of layers and wear properties were investigated. A pin on disc wear testing machine was used for evaluation of wear resistance and the worn surface was characterised. The results indicated that the oxide layer which has been formed on Ti by the new method is free of TiO2 (rutile) phase and the wear resistance of this layer has been improved with respect to the rutile phase formed by conventional method. Scanning electron microscopy photomicrographs prove the main wear mechanism to be fatigue wear on the surface for the conventional and abrasive wear for the new treatment.
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