In this study, tribological and corrosion behavior of commercially pure titanium (CP-Ti) with different surface roughness values after thermal oxidation was investigated. The CP-Ti specimens were prepared with three different roughness values from silicon carbide paper, Ra = 0.1, 0.3, and 0.6 lm, and the thermal oxidization process was conducted at a temperature of 850°C for 8 h in an O 2 atmosphere. Structural, mechanical, corrosion, and tribological properties of untreated and thermally oxidized CP-Ti with different surface roughness values were investigated through x-ray diffraction, scanning electron microscopy, microhardness, potensiostat, and pin-on-disk techniques. The corrosion and tribological behavior of CP-Ti improved as an oxide layer was formed by thermal oxidation. It was observed that the surface roughness had an effect on these characteristics. It was established that the decreased roughness improves the tribological and corrosion properties.

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