Abstract
In order to develop a new production process for Al–Sc alloys, a fundamental study on the electrolysis in CaCl 2–Sc 2O 3 melts was conducted using a small-scale laboratory cell. Al–Sc alloys were electrochemically produced by cathodically polarizing an Al liquid electrode in CaCl 2–Sc 2O 3 melts at 1173 K. Metallic-colored spherical samples were produced by the electrolysis and were analyzed by XRD, EPMA, XRF, and ICP–AES. The electrolyzed samples consisted of Al and Al 3Sc phases. The purity of the obtained Al–Sc alloys was greater than 99 mass%, and the calcium content was less than 0.65 mass%. This study demonstrates the feasibility of Al–Sc alloy production directly from Sc 2O 3 by electrochemical methods.
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