Influence of the method of surface modification on the electrochemical properties of titanium

Titanium possess a unique combination of high resistance to corrosion and high specific strength, which is why it has found wide application in fields where durability and reliability of equipment is required. However, in many operating conditions, it requires corrosion protection in aggressive substances. Various methods of modifying the surface of titanium and its alloys are employed for this purpose. The paper compares two methods of modification: anode oxidation and laser treatment. Oxidation forms inert coating, which reduces the output of alloying components, on the surface of titanium. Laser treatment produces a developed surface relief, increases microhardness and forms a protective oxide layer. We have found that laser treatment is more effective in increasing the corrosion resistance of titanium and its alloys.