HR3C在超临界水中的腐蚀性能研究  

Corrosion Behavior of HR3C in Supercritical Water

作　　者：高文华[1] 沈朝[1] 张乐福[1] 

机构地区：[1]上海交通大学核科学与工程学院,上海200240

出　　处：《原子能科学技术》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)

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.

关 键 词：HR3C 超临界水 均匀腐蚀 

分 类 号：TG174[金属学及工艺—金属表面处理]