通过失重法、电化学和表面分析技术探讨了1013×105P a和80℃条件下吸收了CO2的4种有代表性的烷醇胺(MEA、DEA、AMP、MDEA)水溶液(3 mol/L )对碳钢的腐蚀性特点，从不同角度讨论了它们的CO2吸收机理和腐蚀性大小.实验表明， 不同的烷醇胺溶液吸收CO2的机理不同，生成的腐蚀产物膜及溶液组成也不同，所以腐蚀 性大小也有差异.在本实验条件下，腐蚀性大小顺序为：MEA>AMP>DEA>MDEA.
The corrosion behavior of carbon steel in CO2-abs orbed 3.0 mol/L MEA、DEA、AMP and MDEA solutions under 1.013×105Pa CO2 at 8 0℃ was investigated by static weight loss test,electrochemical method and surfa ce analytical technology.Their CO2 absorption mechanisms and corrosive charact eristic were discussed from several points of view.Different structure alkanolam ines have different CO2 absorption mechanisms,their corrosion product film and solution constituents were different,so their corrosivity was different.The cor rosivity of CO2 saturated amines tested in this work decreased in the order: M EA>AMP>DEA>MDEA.
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