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<p>The investigation focused on the corrosion behavior and mechanism of B30 alloy interfered by direct current (DC) in a simulated seawater. The results indicate that DC interference severely impairs the passive film protection and causes the presence of active–passive transition zone, leading to diminished passivity and repassivation of the alloy. The increasing DC current density damages the integrity and compactness of surface passivation film, which facilitates the nucleation and extension of pitting corrosion, resulting in the change of corrosion characteristic from slight pitting to severe localized corrosion</p>

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Study on the Influence of DC Interference on the Corrosion Resistance of B30 Alloy in Ocean Environment

  • 期刊论文

  • 发表日期：

    2025年8月18日

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  • S. T. Guo,
  • J. L. Dai,
  • M. Zhu,
  • Y. F. Yuan,
  • S. M. Yin

摘要

The investigation focused on the corrosion behavior and mechanism of B30 alloy interfered by direct current (DC) in a simulated seawater. The results indicate that DC interference severely impairs the passive film protection and causes the presence of active–passive transition zone, leading to diminished passivity and repassivation of the alloy. The increasing DC current density damages the integrity and compactness of surface passivation film, which facilitates the nucleation and extension of pitting corrosion, resulting in the change of corrosion characteristic from slight pitting to severe localized corrosion