Research Progress on the Corrosion Behavior of Structural Steels of Pressurized Water Reactor Nuclear Power Plant

The utilization of nuclear energy with high quality and efficiency is of great significance to effectively promote the transformation of China's energy structure. It is the basis and focus of the development of nuclear power to ensure the safe operation of nuclear power plants. Because the structural materials of nuclear power plant are vulnerable to corrosion in the relevant water environment, which affects the safe operation of nuclear power plant, it is particularly important to carry out in-depth research on the corrosion behavior of these equipment and materials. This paper focuses on the pressurized water reactor (PWR) nuclear power plant with the highest utilization rate in China and internationally, summarizes some common corrosion types of its structural materials in the operation process, and mainly analyzes the characteristics, mechanism and influencing factors of stress corrosion, pitting corrosion and galvanic corrosion, and looks forward to the development trend of PWR nuclear electrical structural materials.