通过模拟压水堆一回路水环境,对690和800两种合金进行了在含Zn 10 μg/kg、320℃高温溶液中浸泡1000 h的腐蚀实验,并对实验后的试样氧化膜进行SEM和XPS分析.结果表明,690镍基合金的腐蚀增重率低于800合金,其氧化膜较800合金薄;两种试样均形成了外富Fe、Zn,内富Cr的氧化膜;随着距离氧化膜表面距离的增加,氧化膜中化合物的主要成分由(Zn,Fe,Ni)(Fe,Cr)2O4依次向ZnCr2O4和Cr2O3过渡.
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