The corrosion behavior of seven commercial alloys (602CA, 310SS, 253MA, 800H, F321, F316L, 304SS) was investigated in a wet CO₂ gas under cyclic reactions up to 150 cycles at 650°C. Water vapor accelerated the oxidation of all alloys. Alloy 602CA was alumina-forming in dry CO₂ but changed to chromia-forming in the wet gas. In wet gas, the 310SS and 253MA underwent breakaway oxidation which was enhanced by the cyclic reaction. Spallation and buckling of the outer iron oxide scale were considerable for the less-protective alloys, 800H, F321, F316L and 304SS, with the formation of reddish iron oxide whiskers on the scale surface. The carburisation of F321, F316L and 304SS was identified and found to be reduced significantly by the presence of water vapor. The effect of water vapor on oxidation, carburisation, oxide buckling and whisker formation is discussed in comparison with that in dry gas.

研究了七种商业合金（602CA、310SS、253MA、800H、F321、F316L、304SS）在湿 CO ₂气体中在 650°C 下循环反应达 150 次循环的腐蚀行为。水蒸气加速了所有合金的氧化。合金 602CA 在干燥的 CO _{2 中}形成氧化铝但在湿气中变成氧化铬。在湿气中，310SS 和 253MA 经历了通过循环反应增强的分离氧化。对于保护性较低的合金 800H、F321、F316L 和 304SS，外部氧化铁皮的剥落和屈曲相当大，在氧化铁皮表面形成红色氧化铁晶须。F321、F316L 和 304SS 的渗碳被确定并发现由于水蒸气的存在而显着降低。水蒸气对氧化、渗碳、氧化物屈曲和晶须形成的影响与干燥气体中的影响进行了比较。