Preparation of Heat and Corrosion Resistant Layer on 304 Austenitic Stainless Steel

The heat and corrosion resistant layer was prepared on the surface of SUS304 stainless steel by electric plating Ni and high-temperature diffusion.The properties of the layer were analyzed by scanning electron microscopy(SEM),X-ray diffraction(XRD) and energy spectroscopy.The results showed that the plating on stainless steel transformed from mechanical binding to metallurgical binding and the binding force between coating and substrate was improved greatly after high-temperature diffusion at 1050 ℃ for 30 min.The results of thermal shock test、salt spray test and high-temperature oxidation test showed that the plating had high heat and corrosion resistance.