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The work systematically investigates the corrosion behavior of Q355NH weathering steel used in offshore wind power in a marine atmospheric environment. A 12-month outdoor exposure test was conducted in Shicheng, Putian, combined with characterization techniques such as SEM, XRD, and EIS, to analyze the formation and evolution of the rust layer and its protective effect on the substrate. The results show that the thickening of the rust layer can enhance the corrosion resistance of the substrate to some extent. However, the presence of SO2 in the atmosphere leads to uneven corrosion, adversely affecting the corrosion resistance. This study reveals the complex corrosion mechanisms of Q355NH steel in marine environments, providing scientific insights for the application and protection strategies of weathering steel in offshore wind farms.

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Data-Driven Investigation on Corrosion Resistance of Q355NH Steel for Marine Wind Power Applications

  • 会议论文

  • 发表日期：

    2025年

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  • Jinguang Zhang,
  • Wang Qian,
  • Qing Li,
  • Xiaojia Yang

摘要

The work systematically investigates the corrosion behavior of Q355NH weathering steel used in offshore wind power in a marine atmospheric environment. A 12-month outdoor exposure test was conducted in Shicheng, Putian, combined with characterization techniques such as SEM, XRD, and EIS, to analyze the formation and evolution of the rust layer and its protective effect on the substrate. The results show that the thickening of the rust layer can enhance the corrosion resistance of the substrate to some extent. However, the presence of SO2 in the atmosphere leads to uneven corrosion, adversely affecting the corrosion resistance. This study reveals the complex corrosion mechanisms of Q355NH steel in marine environments, providing scientific insights for the application and protection strategies of weathering steel in offshore wind farms.