Journal
CORROSION SCIENCE
Volume 208, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2022.110613
Keywords
Modeling studies; Cathode dissolution; CO 2; H 2 S corrosion; Deposition competition
Funding
- Youth Program of the National Natural Science Foundation of China [52001061]
- Young Elite Scientist Sponsorship Program Cast [YESS20200139]
- Fundamental Research Funds for the Central Universities [N2202016]
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The study found that when the rate of nuclei is less than 10% of the total, the corrosion of steel by CO2/H2S is controlled by only one factor, with calculated results in good agreement with experimental data.
The dissolution-ionization-diffusion-deposition (DIDD) model is corrected by a cathodic process with the feature of complex equilibrium and deposition competition. CO2/H2S corrosion of steel is taken as an example to better understand whether the main factor controlling the corrosion is CO2, H2S or both. The preliminary assessment reveals that when the rate of nuclei is less than 10 % of the total, the corrosion is controlled by only one factor. Furthermore, the calculated results also have a good agreement with morphology and weight loss experiments. This study makes a significant contribution to promoting the application of DIDD model.
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