Increase of corrosion resistance of titanium by anodic oxidation

Titanium is used for many applications, ranging from chemical, to biomedical, to decorative ones. Its versatility is due to its excellent specific mechanical resistance, high durability and biocompatibility. Titanium presents excellent corrosion resistance in natural environments thanks to the presence of a well protective passive layer of TiO2, but its use in industrial environments may require a significantly better behavior with respect to what is commonly observed. By means of anodic oxidation it is possible to increase at the metal surface the thickness of TiO2, increasing the barrier effect. This research aims to study the surface modification of titanium alloys in order to increase the pure titanium durability in highly aggressive environment and to obtain a potential economical alternative to titanium-palladium alloys currently on the market.