Influence of oxygen partial pressure on the passivation and depassivation of super 13Cr stainless steel in high temperature and CO2 rich environment
The passivation and depassivation characteristics of Super 13Cr stainless steel were examined under a range of oxygen partial pressures within a high-temperature (120 ℃) and high-pressure (3 MPa) CO<sub>2</sub> atmosphere. We performed comprehensive electrochemical assessments, encompassing open-circuit potential monitoring, electrochemical impedance spectroscopy, and linear polarization resistance analysis, to evaluate the corrosion resistance and passive film stability. The results demonstrate that the addition of low O<sub>2</sub> partial pressures enhanced the stability of the passive film, while higher O<sub>2</sub> levels led to the loss of the passivation properties of Super 13Cr stainless steel. The study elucidates the pivotal role of oxygen in the corrosion mechanisms affecting Super 13Cr stainless steel, presenting valuable data to enhance for integrity management in severe environmental conditions.
Authors
- Yin Cheng-xian
- Xinan Liang (ORCID: https://orcid.org/0009-0006-9994-6737)
- Wei Lv (ORCID: https://orcid.org/0000-0002-0866-7868)
- Zhengyi Xu (ORCID: https://orcid.org/0000-0001-8309-9453)
- Fu Anqing
- Yan Gao (ORCID: https://orcid.org/0000-0002-3295-5755)
- Shaohua Song
- Hanwei Liu
- Lv Naixin
- Bai Haitao
Institutions
- Harbin Engineering University (CN)
- Xi'an Shiyou University (CN)
- CITIC Group (China) (CN)
- China National Petroleum Corporation (China) (CN)
Publication Details
- Journal
- Scientific Reports
- Published
- 2024-11-15
- DOI
- https://doi.org/10.1038/s41598-024-77208-w
- Citations
- 9
- Primary Topic
- Hydrogen embrittlement and corrosion behaviors in metals
- Type
- article
- Field-Weighted Citation Impact
- 1.55
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangxi Province