Research on oxidation resistance and corrosion resistance of marine titanium alloy and chromium coating
In order to prolong the service life of titanium alloy shipboard weapons and equipment in the environment of high temperature and seawater splashing,arc ion plating technology was used to pre-pare Cr coating on its surface,and the resistance to high temperature oxidation and salt spray corrosion of titanium alloy and Cr coating was studied.The results show that due to the alternating effect of cold and heat,after cyclic oxidation at 650 ℃ for 1 h,the oxides and matrix on the surface of titanium alloy crack,and Ti oxides accumulation is formed.The surface of the arc ion plating Cr coating is smooth and complete,and only the oxidation of Cr element occurs,which has a protective effect on the matrix.After 720 h of salt spray corrosion,the surface of the titanium alloy is corroded and the spalling area is generated,while the Cr coating prepared by arc ion plating has no corrosive spalling area and has good salt spray corrosion resistance.
titanium alloyCr coatingsalt spray corrosionhigh temperature oxidation
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