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中文摘要：
通过高压釜浸泡实验研究了超级奥氏体不锈钢HR3C在循环的超临界水（SCW）中的均匀腐蚀性能,实验温度分别为550、600、650℃,压力为25 MPa,并对实验后试样生成的氧化膜进行了SEM、EDS和XRD分析。实验结果显示,HR3C在SCW环境中的氧化腐蚀速率随着温度的升高而增大,1 500h后650℃SCW环境下材料的腐蚀增重约为550℃时的2倍。材料表面生成的氧化膜主要成分为FeCr_2O_3、Fe_3O_4和Fe_2O_3,内层氧化膜富Cr而外层氧化膜富Fe。
英文摘要：
The uniform corrosion of HR3C in supercritical water （SCW） at 25 MPa was investigated by exposure in circulating autoclave with exposure temperature ranging from 550℃ to 650 ℃. SEM, EDS and XRD techniques were employed to characterize the oxide films. The results show that the corrosion rate of HR3C increases with expo- sure temperature, and the corrosion weight gain at 650 ℃ is as twice as that at 550 ℃. The oxide films formed on the surface of specimens mainly consist of FeCr203, Fe304 and Fe203 with inner layer rich in Cr and outer layer rich in Fe.
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