Electrochemical production of Al-Sc alloy in CaCl2-Sc2O3 molten salt

被引：52
|
作者：
Harata, Masanori [2 ]
Yasuda, Kouji [1 ]
Yakushiji, Hiromasa [3 ]
Okabe, Toru H. [1 ]
机构：
[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
[2] Univ Tokyo, Dept Mat Engn, Grad Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan
[3] Pacific Metals Co Ltd, Tech Res & Dev Dept, Prod Div, Aomori 0318617, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 474卷 / 1-2期
关键词：
Scandium; Al-Sc alloy; Molten salt; Electrolysis; SOLID SOLUBILITY; REDUCTION; SCANDIUM; RESISTIVITY; TITANIUM; POWDER; OXIDE;
D O I：
10.1016/j.jallcom.2008.06.110
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：124 / 130
页数：7
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