Corrosion of X80 steel in the co-existence of sulfate reducing bacteria and permeating hydrogen
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 6 April 2023
Issue publication date: 12 April 2023
Abstract
Purpose
This study aims to shed light on the corrosion behavior of X80 steel when sulfate-reducing bacteria (SRB) and permeating hydrogen interact.
Design/methodology/approach
In this study, electrochemical tests were conducted between 25 and 55 °C, and the surface morphology of the specimen was observed using scanning electron microscopy and three-dimensional photos. The composition of the oxide film was characterized by X-ray photoelectron spectroscopy (XPS).
Findings
Under the condition of 6 MPa simulated natural gas (15% H2), the content of S-containing compounds (FeS and FeSO4) in the corrosion products on the surface of the specimen decreases from 60.8% to 54.4%. This finding indicates that hydrogen permeation inhibits the metabolic processes of SRB in this environment. By comparing the hydrogen-uncharged specimen, it was found that under the condition of 6 MPa simulated natural gas (15% H2) hydrogen charging, the uniform corrosion on the X80 surface was weakened, and the protection of the oxide film on the specimen surface in this environment was better than that without hydrogen charging.
Originality/value
To the best of the authors’ knowledge, most of these existing studies have focused on the effect of hydrogen on the mechanical properties of materials and very little is known about corrosion behavior in the hydrogen environment. In this study, a self-designed small gas phase hydrogen charging device was used to study the X80 surface corrosion behavior in the environment of the H2-doped natural gas pipeline.
Keywords
Acknowledgements
The authors are grateful to the support from the National Natural Science Foundation of China (grant No. 52271074, 52171080) and Sichuan Science and Technology Support Program (grant No. 2022JDJQ0012) and special project for the central government to guide the development of local science and technology in Sichuan Province (2021ZYD0099).
Citation
Li, Y., Hu, J. and Zhong, X. (2023), "Corrosion of X80 steel in the co-existence of sulfate reducing bacteria and permeating hydrogen", Anti-Corrosion Methods and Materials, Vol. 70 No. 3, pp. 112-121. https://doi.org/10.1108/ACMM-12-2022-2737
Publisher
:Emerald Publishing Limited
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