Abstract

The corrosion behavior and kinetics of the 316 stainless steel (316SS) in the NaCl-KCl-AlCl3 molten salt and salt vapor were investigated at 400 °C. The corrosion rate of 316 SS in salt vapor is faster than that in molten salt. The corrosion depth of the corroded 316 SS increases with the increase of corrosion time. The corrosion rate of 316 SS did not show a continuous downward trend as usual, but showed a multi-stage trend of stable stage, rapid rise stage and slow growth rate stage due to the formation and evolution of aluminum oxide layer on the alloy surface.

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