Corrosion behavior of GH3535 alloy in molten LiF–BeF2 salt

The corrosion behavior of GH3535 alloy in molten LiF–BeF2 salt was investigated in a thermal convection loop. Results indicate that NiF2 in molten LiF–BeF2 salt and O2 from leakage drive the corrosion of alloy. The corrosion of alloy at the hot section is severer than that at the cold one. The BeCr2O4 was detected on the surface of alloy at the cold section while not at the hot one. Reactions between Be and metallic fluorides result in the concentration of impurities in molten LiF–BeF2 salt significantly reduced, and no obvious corrosion occurred in the GH3535 alloy at different temperature.