Corrosion and tribocorrosion performance of thermally oxidized commercial pure titanium in a 0.9% NaCl solution

In the present work, the corrosion and tribocorrosion characteristics of thermally oxidized commercially pure titanium in a 0.9% NaCl solution have been investigated. Thermal oxidation (TO) of CP-Ti was carried out at a temperature of 625C for 20 h. This treatment results in a multi-layered structure consisting of a 1lm rutile (TiO2) film and a 9lma-titanium oxygen diffusion zone (ODZ) (a-Ti(O)). Electrochemical tests were carried out on surfaces created at various depths from the TO-Ti original surface. It was found that the rutile film generated through TO offers excellent corrosion resistance over that of untreated Ti. Testing also provided evidence that oxygen content in the upper part of the ODZ (depths