Understanding and Controlling the Electrochemical Properties of Sulfide Inclusions for Improving the Pitting Corrosion Resistance of Stainless Steels

Abstract

This paper reviews recent studies on the relationships between local electrochemical properties at the steel/inclusion boundary and pitting corrosion resistance of stainless steels. The effect of Mo addition to the steel matrix on the local dissolution behavior at the steel/inclusion boundary is explained. Then, this paper presents that the inhibition of inclusion dissolution is beneficial for improving the pitting corrosion resistance of stainless steels. In addition, this paper introduces other methods for improving the pitting corrosion resistance of stainless steels.