Compatibility of ferritic steels with Li2BeF4 molten salt breeder

Abstract The corrosion behavior of ferritic steels including JLF-1 (Fe–9Cr–2W) against Flibe (LiF–BeF2 molten salt mixture) was investigated. Dipping experiments were carried out by (1) varying the dipping period and (2) varying the composition of the gas atmosphere. By the former experiment it was found that a protective scale of oxides was formed in about 3 days. By the latter, it was found that oxidization occurred prior to fluorination at 550 °C. From these results, it could be concluded in this stage that the compatibility of JLF-1 with Flibe is good in the first stage of the FFHR operation condition.