Study of stainless steel's phosphate oxidation disposal and advanced film prepared by sol-gel method

The phosphate oxidation film was obtained on the surface of stainless steel, subsequently the sol-gel film was produced, and the effect of accelerant on the film was researched. The anti-corrosion performance of the film was assessed through salt-spray test, damp heat test, brine marinating test and anode polarization curve, and the effect on mechanical property was studied through drawing-extending test. The results show that the stainless steel material has good anti-corrosion performance after phosphate oxidation, and accelerant improves its anti-corrosion performance, meanwhile its mechanical property is not affected, and the sol-gel treatment following greatly enhances its corrosion performance.