Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 474, Issue 1-2, Pages 124-130Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2008.06.110
Keywords
Scandium; Al-Sc alloy; Molten salt; Electrolysis
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Funding
- Pacific Metals Co., Ltd.
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In order to develop a new production process for Al-Sc alloys, a fundamental study on the electrolysis in CaCl2-Sc2O3 melts was conducted using a small-scale laboratory cell. Al-Sc alloys were electrochemically produced by cathodically polarizing an Al liquid electrode in CaCl2-Sc2O3 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 Al3Sc 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 Sc2O3 by electrochemical methods. (C) 2008 Elsevier B.V. All rights reserved.
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