Flow-accelerated corrosion behavior of 13Cr stainless steel in a wet gas environment containing CO<sub>2</sub>

Yong Li; Min-dong Chen; Jian-kuan Li; Long-fei Song; Xin Zhang; Zhi-yong Liu

doi:10.1007/s12613-018-1626-3

Volume 25 Issue 7

Jul. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(7): 779-787

Yong Li, Min-dong Chen, Jian-kuan Li, Long-fei Song, Xin Zhang, and Zhi-yong Liu, Flow-accelerated corrosion behavior of 13Cr stainless steel in a wet gas environment containing CO₂, Int. J. Miner. Metall. Mater., 25(2018), No. 7, pp. 779-787. https://doi.org/10.1007/s12613-018-1626-3

Cite this article as:

Yong Li, Min-dong Chen, Jian-kuan Li, Long-fei Song, Xin Zhang, and Zhi-yong Liu, Flow-accelerated corrosion behavior of 13Cr stainless steel in a wet gas environment containing CO2, Int. J. Miner. Metall. Mater., 25(2018), No. 7, pp. 779-787. https://doi.org/10.1007/s12613-018-1626-3

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Research Article

Flow-accelerated corrosion behavior of 13Cr stainless steel in a wet gas environment containing CO₂

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Corresponding author:
Zhi-yong Liu E-mail: liuzhiyong7804@126.com
Received: 22 November 2017; Revised: 10 April 2018; Accepted: 13 April 2018

Abstract

Abstract

This work investigated the flow-accelerated corrosion (FAC) behavior of 13Cr in a wet CO₂-containing environment at different flowing gas velocities and impinging angles, with the natural-gas pipeline environment simulated by a self-assembled impingement jet system. Surface morphology determination, electrochemical measurements, and hydromechanics numerical analysis were carried out to study the FAC behavior. The results demonstrate that pitting corrosion was the primary mode of corrosion in 13Cr stainless steel. High-flow-rate gas destroyed the passive film and decreased the pitting potential, resulting in more serious corrosion. The corrosion degree with various impact angles showed the following order: 90° > 60° > 45°. The shear force and the electrolyte from the flowing gas were concluded to be the determinant factors of FAC, whereas the shear force was the main factor responsible for destroying the passive film.
- flow-accelerated corrosion;
- jet loop;
- flowing velocity;
- impact angle;
- CO₂

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