Abstract
In the present work, the corrosion properties of a low-carbon stainless steel (X2CrNi18–9) and a Ti-stabilised high-carbon stainless steel (X6CrNiTi18–10) were investigated in a molten LiCl–KCl–CsCl salt at 400, 500, and 600°C for 1, 3, 9 and 27h. In addition, a Ni-based superalloy (CMSX-4) was tested at 800°C for 3h. The low-carbon steel revealed severe intergranular corrosion for all testing conditions, whereas the Ti-stabilised steel was protected against intergranular corrosion by a Cr2O3 passive layer for short exposure times and up to a temperature of approximately 500°C. In comparison, CMSX-4 revealed superior corrosion resistance.
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