Influence of ray irradiation on surface film structures of stainless steels created in super critical water environment

Yamamoto, Masahiro; Nakahara, Yukio; Karasawa, Hidetoshi*; Katsumura, Yosuke*

no journal, , 

Super critical water cooling reactor (SCWR), which has higher energy efficiency than existent reactor, has been planned and examined. To realize the SCWR system, it is important to ensure the reliabilities of the materials used in the super critical condition. Some types of stainless steels were immersed in super critical water with -ray irradiated condition. After the test, the surface films of stainless steels were analyzed. It was found that hematite (FeO) was formed on the surface of oxide film with -ray irradiation. Contrastingly, complex oxide including Cr and Ni was formed on the surface without -ray irradiation.