Comparative study on the corrosion behavior of X52, 3Cr, and 13Cr steel in an O2-H2O-CO2 system:products, reaction kinetics, and pitting sensitivity

Bing-wei Luo; Jie Zhou; Peng-peng Bai; Shu-qi Zheng; Teng An; Xiang-li Wen

doi:10.1007/s12613-017-1447-9

Volume 24 Issue 6

Jun. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(6): 646-656

Bing-wei Luo, Jie Zhou, Peng-peng Bai, Shu-qi Zheng, Teng An, and Xiang-li Wen, Comparative study on the corrosion behavior of X52, 3Cr, and 13Cr steel in an O₂-H₂O-CO₂ system:products, reaction kinetics, and pitting sensitivity, Int. J. Miner. Metall. Mater., 24(2017), No. 6, pp. 646-656. https://doi.org/10.1007/s12613-017-1447-9

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Bing-wei Luo, Jie Zhou, Peng-peng Bai, Shu-qi Zheng, Teng An, and Xiang-li Wen, Comparative study on the corrosion behavior of X52, 3Cr, and 13Cr steel in an O2-H2O-CO2 system:products, reaction kinetics, and pitting sensitivity, Int. J. Miner. Metall. Mater., 24(2017), No. 6, pp. 646-656. https://doi.org/10.1007/s12613-017-1447-9

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Comparative study on the corrosion behavior of X52, 3Cr, and 13Cr steel in an O₂-H₂O-CO₂ system:products, reaction kinetics, and pitting sensitivity

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Corresponding author:
Shu-qi Zheng E-mail: zhengsq09@163.com,zhengsq@cup.edu.cn
Received: 17 November 2016; Revised: 1 March 2017; Accepted: 3 March 2017

Abstract

Abstract

The corrosion behaviors of X52, 3Cr low-alloy steel, and 13Cr stainless steel were investigated in an O₂-H₂O-CO₂ environment at various temperatures and O₂-CO₂ partial-pressure ratios. The results showed that the corrosion rates of X52, 3Cr, and 13Cr steels increased with increasing temperature. The corrosion rates slowly increased at temperatures less than 100℃ and increased sharply when the temperature exceeded 100℃. In the absence of O₂, X52, 3Cr, and 13Cr exhibited uniform corrosion morphology and FeCO₃ was the main corrosion product. When O₂ was introduced into the system, various forms of Fe₂O₃ appeared on the surface of the samples. The Cr content strongly influenced the corrosion resistance. The 3Cr steel with a low Cr content was more sensitive to pitting than the X52 or 13Cr steel. Thus, pitting occurred on the surface of 3Cr when 1.25 MPa of O₂ was added; this phenomenon is related to the non-uniform distribution of Cr in 3Cr.
- corrosion;
- oxygen;
- carbon dioxide;
- iron carbonate;
- iron oxide;
- pitting sensitivity

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