The role of hydrogen gas in SRB-induced degradation of X80 pipeline steel in hydrogen-blending environments

IF 5.5 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2024-11-01 DOI:10.1016/j.electacta.2024.145301

Zheng Cai , Boxin Wei , Jin Xu , Changkun Yu , Cheng Sun

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Abstract

The pipeline transportation of hydrogen poses higher challenges to the safety of pipes. In this study, the corrosion mechanisms of SRB in X80 pipeline steel under H₂ conditions were investigated. Thermodynamic analysis revealed that the introduction of hydrogen enhances SRB metabolic activity, facilitating the reduction of sulfate to sulfide and promoting hydrogen embrittlement. Additionally, hydrogen permeation tests confirmed that SRB significantly increase hydrogen diffusion in steel, accelerating corrosion. The enhanced hydrogen permeation under biotic conditions was linked to increased hydrogen uptake and sulfide formation, which further destabilized the steel microstructure. This study provides critical insights into the interplay between microbial activity, hydrogen permeation, and corrosion, offering a deeper understanding of the factors influencing hydrogen-assisted corrosion in steel pipelines. The findings contribute to the optimization of material performance and risk assessment in hydrogen-blended environments.

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氢气在掺氢环境中 SRB 引起的 X80 管道钢降解中的作用

氢气的管道运输对管道安全提出了更高的挑战。本研究对氢气₂条件下 X80 管线钢中 SRB 的腐蚀机理进行了研究。热力学分析表明，氢的引入增强了 SRB 的新陈代谢活动，促进硫酸盐还原成硫化物，促进氢脆。此外，氢渗透试验证实，SRB 显著增加了钢中的氢扩散，加速了腐蚀。在生物条件下，氢渗透的增强与氢吸收的增加和硫化物的形成有关，这进一步破坏了钢微观结构的稳定性。这项研究为微生物活动、氢渗透和腐蚀之间的相互作用提供了重要见解，使人们对影响钢制管道氢辅助腐蚀的因素有了更深入的了解。研究结果有助于优化混合氢环境中的材料性能和风险评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.