Titanium is a new shipbuilding structural material,which has excellent comprehensive properties,such as the low density,high specific strength,good workability,and excellent resistance to seawater corrosion.However,the titanium using shipbuilding material is handicapped by several critical disadvantages,including the lower wear resistance,the ability of resistance to high temperature oxidation,and the galvanic corrosion when titanium alloy contacts with other metals.The ceramic coating on the surface of tit...