Effects of Carbon Content and Microstructure on Corrosion Rate of 13% Chromium Steel in Wet CO₂ Environments

Abstract

Effects of carbon content and microstructure on corrosion rate of 13% chromium steel were investigated in wet CO₂ environments. First, corrosion rates of ferrite, martensite and tempered martensite were different from each other in 13% chromium steel. Corrosion rate of tempered martensite was the highest and that of martensite was the lowest. Second, corrosion rate of 13% chromium steel was indicated as the summation of the product of corrosion rate for each microstructure by its areal fraction.