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An independently developed corrosion online monitoring system, in conjunction with a Scanning Electron Microscope (SEM) and a 3D Confocal Laser Microscope (VK-9700), was utilized to study the corrosion behavior of Q345 steel in a marine atmospheric environment. The real-time corrosion current of the sample in the marine atmospheric environment was monitored. The results indicated that temperature and humidity had significant impacts on the overall corrosion current process. Furthermore, other environmental factors such as radiation and SO2 also notably influenced the initial stages of steel substrate corrosion current. SO2, in particular, led to the formation of deeper pitting on the steel surface in the early stages of corrosion. As the corrosion progressed, surfaces of the test spots with higher radiation intensity exhibited more cracks and porosity.

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Study on Multi-factor Synergistic Corrosion of Q345 Steel in Marine Atmospheric Environment Based on Corrosion Big Data

  • 会议论文

  • 发表日期：

    2025年

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  • Qing Li,
  • Xinyu Wang,
  • Renzheng Zhu,
  • Xiaojia Yang

摘要

An independently developed corrosion online monitoring system, in conjunction with a Scanning Electron Microscope (SEM) and a 3D Confocal Laser Microscope (VK-9700), was utilized to study the corrosion behavior of Q345 steel in a marine atmospheric environment. The real-time corrosion current of the sample in the marine atmospheric environment was monitored. The results indicated that temperature and humidity had significant impacts on the overall corrosion current process. Furthermore, other environmental factors such as radiation and SO2 also notably influenced the initial stages of steel substrate corrosion current. SO2, in particular, led to the formation of deeper pitting on the steel surface in the early stages of corrosion. As the corrosion progressed, surfaces of the test spots with higher radiation intensity exhibited more cracks and porosity.