Compatibility of FBR materials with sodium

In order to incorporate a procedure for the evaluation of the sodium environmental effects on core and structural materials into the elevated temperature structural design guide lines for fast breeder reactors, R&D on the sodium compatibility of the materials has been in progress in Japan Atomic Energy Agency. This paper reviews corrosion behavior in the sodium of conventional austenitic and ferritic steel. Simultaneously, the corrosion and mechanical properties of the materials for advanced FBRs, 12Cr steel and ODS steels are summarized, including the results of recent research.