在模拟压水堆一回路水环境中,对镍基690合金进行了在加锌量分别为10,60,120 μg/L的三组320℃高温溶液中600 h的腐蚀试验,并对腐蚀后的试样表面进行了X射线光电子能谱(XPS)分析.结果表明,随着锌浓度的增加,试样的腐蚀增重速率降低,氧化膜厚度减薄,降低腐蚀速率的有效加锌量范围为10～60μg/L;试样表面形成主要成分为ZnCr2O4和Cr2O3的氧化膜.
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