Abstract

Thermal nitridation with pre-oxidation of 430 stainless steel was performed in order to improve both the corrosion resistance and the electrical conductivity. As shown by SEM, EDS and AES exhibit ordered mixed Fe/Cr-oxide and Cr-nitride structure. The corrosion resistance of SS430 was enhanced by the oxide formed by the pre-oxidation, especially under anodic condition, and the Cr-nitride formed by substrate serves to improve electrical conductivity in the simulated PEMFC environment.

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