Unveiling the influential mechanism of O2 on the corrosion of N80 carbon steel under dynamic supercritical CO2 conditions

被引：7
|
作者：
Li, Y. Y. [1 ]
Jiang, Z. N. [1 ]
Zhang, Q. H. [1 ]
Lei, Y. [1 ]
Wang, X. [1 ]
Zhang, G. A. [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Hubei Key Lab Mat Chem & Serv Failure, Key Lab Mat Chem Energy Convers & Storage,Minist, Wuhan 430074, Peoples R China
来源：
CORROSION SCIENCE | 2022年 / 205卷
基金：
中国国家自然科学基金;
关键词：
Supercritical CO2-O-2; Waterchemistrymodel; Steelcorrosion; Electrochemicalmeasurements; Diffusionbarriereffect; LOW-TEMPERATURE OXIDATION; PRESSURE AIR INJECTION; GEOLOGICAL SEQUESTRATION; MUTUAL SOLUBILITIES; CO2-H2O MIXTURES; AQUEOUS NACL; STORAGE CCS; WATER; BEHAVIOR; CAPTURE;
D O I：
10.1016/j.corsci.2022.110436
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influential mechanism of O-2 on the corrosion of N80 carbon steel under dynamic supercritical CO2 conditions was explored by mass loss and electrochemical tests, and surface analysis. It is demonstrated that the introduction of O-2 inhibits the corrosion of steel. The developed water chemistry model confirms that the decrease in the corrosive species concentration by introducing O-2 is not responsible for the inhibition to steel corrosion. The corrosion inhibition of O-2 is implemented by promoting the formation of protective FeCO3 film in the initial period owing to the diffusion barrier effect of the formed outer ferric hydroxide/oxide film.
引用
收藏
页数：20
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