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。
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.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2016年第2期317-322,共6页
Atomic Energy Science and Technology
基金
国家重点基础研究发展计划(973计划)资助项目(2007CB209800)
关键词
HR3C
超临界水
均匀腐蚀
HR3C
supercritical water
uniform corrosion
