Effects of CO2 gassy-supercritical phase transition on corrosion behaviors of carbon steels in saturated vapor environment

Corrosion behaviors of P110 and N80 tubular steels in CO 2 gas phase and supercritical (S-CO 2 ) phase in a saturated water vapor environment were explored in corrosion weight loss experiments by SEM, EDS, XRD, XPS and cross-section analysis techniques. With the increase in CO 2 partial pressure, th...

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Bibliographic Details
Published in:Journal of Central South University 2021-02, Vol.28 (2), p.325-337
Main Authors: Zeng, De-zhi, Huang, Zhi-yao, Yu, Zhi-ming, Shi, Shan-zhi, Yi, Yong-gang, Liu, Cong-ping, Tian, Gang, Sun, Yi-cheng
Format: Article
Language:English
Subjects:
Engineering
Metallic Materials
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Summary:Corrosion behaviors of P110 and N80 tubular steels in CO 2 gas phase and supercritical (S-CO 2 ) phase in a saturated water vapor environment were explored in corrosion weight loss experiments by SEM, EDS, XRD, XPS and cross-section analysis techniques. With the increase in CO 2 partial pressure, the average corrosion rate increased first and then decreased. The average corrosion rate reached the maximum value under the near-critical pressure. When CO 2 partial pressure further increased to be above the critical pressure, the average corrosion rate gradually decreased and local aggregation of molecules was weakened.
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-021-4605-1