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<p>Pipeline transportation is a cost-effective solution for hydrogen transport due to its high capacity and low energy consumption. This study investigates the impact of electrochemical hydrogen charging on the corrosion behavior and surface passivation film of X65MS pipeline steel. Results reveal that hydrogen charging induces hydrogen embrittlement, leading to crack formation and depressive deposits. Prolonged charging degrades the microstructure and weakens the protective passivation film, reducing corrosion resistance. Electrochemical measurements, Mott-Schottky analysis, and XPS confirm the presence of corrosion products (Fe<sub>2</sub>O<sub>3</sub>, FeOOH, FeCO<sub>3</sub>, FeS). These findings offer insights into the hydrogen embrittlement mechanism of X65MS steel under hydrogen charging conditions.</p>

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Study on the Influence of Electrochemical Charging Conditions on the Hydrogen Embrittlement Behavior of X65MS Pipeline Steel

  • 期刊论文

  • 发表日期：

    2025年6月9日

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  • Guo Yi,
  • Yang Xu,
  • Chuanbo Zheng,
  • Han Ma,
  • Dianchun Ju,
  • Jiming Zhang,
  • Xianjun Hu

摘要

Pipeline transportation is a cost-effective solution for hydrogen transport due to its high capacity and low energy consumption. This study investigates the impact of electrochemical hydrogen charging on the corrosion behavior and surface passivation film of X65MS pipeline steel. Results reveal that hydrogen charging induces hydrogen embrittlement, leading to crack formation and depressive deposits. Prolonged charging degrades the microstructure and weakens the protective passivation film, reducing corrosion resistance. Electrochemical measurements, Mott-Schottky analysis, and XPS confirm the presence of corrosion products (Fe2O3, FeOOH, FeCO3, FeS). These findings offer insights into the hydrogen embrittlement mechanism of X65MS steel under hydrogen charging conditions.