目前正在运行的压水堆核电站中的自然循环蒸汽发生器遭受了诸如点腐蚀、晶间应力腐蚀、耗蚀及凹痕等腐蚀破坏.本文着重论述压水堆蒸汽发生器腐蚀问题的技术概貌,分析腐蚀发生的机理和过程,鉴别这类蒸汽发生器中常遇到的各种腐蚀的类型,提出减少或防止腐蚀破坏的方法. Natural circulating steam generators in PWR nuclear power plants that are currently in operation suffer from such corrosive damage as pitting corrosion, intergranular stress corrosion, erosion and dents, etc. This paper focuses on the technical overview of the corrosion problems of PWR steam generator, Analyze the mechanism and process of corrosion occurrence, identify the types of corrosion commonly encountered in such steam generators, and propose ways to reduce or prevent corrosion damage.