采用高压釜研究了16Mn钢在含有CO2与CO2+H2S介质的NACE(5wt%NaCl+0.5wt%CH3COOH)溶液中的高温高压腐蚀行为,利用失重法计算了腐蚀速率,通过SEM,XRD,EPMA等手段分析了腐蚀产物的成分及结构.结果表明:CO2腐蚀产物主要为Fe3C;CO2+H2S腐蚀产物主要为FeS,60℃时有FeCO3形成,腐蚀主要显示以CO2腐蚀为主的点蚀特征,90～120℃时,腐蚀系统以H2S腐蚀为主导,腐蚀产生的鼓泡、阶梯状裂纹是CO2与H2S协同作用的结果,CO2会增大H2S腐蚀的敏感性,使腐蚀产生氢损伤的温度提高.
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