湿潤CO₂環境中での13%Cr鋼の腐食に及ぼすC量と金属組織の影響

抄録

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.