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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Thermodynamics and Kinetics of Alloys IV
Presentation Title Thermodynamic analysis of the preparation of Fe-Cr-Al alloys by molten salt electrolysis
Author(s) Lankun Zhao, Hui Li, Chang Liu
On-Site Speaker (Planned) Lankun Zhao
Abstract Scope Iron-chromium-aluminum alloys are widely used in aerospace, nuclear industry and other fields due to their excellent high-temperature oxidation resistance, corrosion resistance and radiation stability. In this paper, Fe2O3, Al2O3 and Cr2O3 were used as raw materials to conduct thermodynamic analysis on the preparation of Fe-Cr-Al alloys by the molten salt electro-deoxidation process within the temperature range of 700-1000 ℃. The results show that during the electrolysis process, the O2- produced by the reduction reaction at the cathode reacts with Ca2+ in the molten salt to form CaFe2O4, CaCr2O4 and CaAl12O19. The first reduction to occur in the reduction process is the reduction of iron (Fe2O3/CaFe2O4→Fe3O4→FeO→Fe). Subsequently, the reduction of chromium (Cr2O3/CaCr2O4→Cr) is carried out, and finally the reduction of aluminum (Al2O3/CaAl12O19→Al) is conducted, ultimately forming the Fe-Cr-Al alloys.
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