PREPARATION OF Al-Sc ALLOY IN CHLORIDE SYSTEM WITH MOLTEN SALT ELECTROLYSIS

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NaCl KCl(equimolar) ScCl 3 system was chosen as the electrolyte, 3 factor quadratic common rotation combination orthogonal design was employed to investigate the effects of temperature, t , current density, J , and the content of ScCl 3 in the molten salt, w (ScCl 3), on the content of Sc in the Al Sc alloys, w (Sc), and the current efficiency, η I , in the preparation of Al Sc alloy with molten salt electrolysis. The regression functions of the relationships of w (Sc) and η I with t , J and w (ScCl 3) were set up. Under the conditions chosen in the experiments, w (Sc) and η I can reach about 8% and 85% respectively.