低压CO2腐蚀规律已经被人们广泛认识，而超临界CO2腐蚀方面的研究却非常有限。国内外的研究主要集中在钢在超临界CO2环境中的腐蚀速率、腐蚀产物膜的结构、形貌、组成及电化学行为等。然而，现有的研究均未涉及到超临界CO2腐蚀机理问题。本文综述了目前国内外超临界CO2条件下钢的腐蚀行为的研究成果，指出了现有研究中的不足，并对超临界CO2腐蚀的研究前景进行了展望，期望能对科研工作者全面了解超临界CO2腐蚀提供参考和借鉴，并能够为油气工业中管道的选材提供理论指导。
The CO2 corrosion under low partial pressure has been recognized widely, but the researches on supercritical carbon dioxide （SC CO2） corrosion were very limited. By far, investigations on steel corrosion under SC CO2 conditions were mainly about the corrosion rate, structure, morphology and composition of corrosion scales, and the electrochemical behaviors. However, present studies were not related to the corrosion mechanism in SC CO2. This paper reviews the research results on corrosion behaviors of steel under supercritical COe conditions, points out the shortcomings in the present investigations and finally looks forward to the research prospects on supercritical CO2 corrosion. It is expected that this paper can not only provide reference for the workers in the field of supercritical CO2 corrosion, but also be served as a theoretical guidance for materials selection in oil and gas industry.
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