A comparative study about hydroxyapatite coated AZ31 and AZ91 Mg alloys

Magnesium alloys are potential candidates for hard tissue replacements due to their structural and mechanical properties close to bone. Unlike conventional metallic implants, the corrosion rate of magnesium is quite high. This will be an advantage if magnesium-based materials are used as biodegradable. In this study, Magnesium-based AZ31 and AZ91 magnesium alloys were coated with hydroxyapatite by plasma spray and electrostatic spray methods and their corrosion rates were compared.