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Direct Method for Producing Scandium Metal and Scandium-Aluminium Intermetallic Compounds from the Oxides

Martinez, Ana Maria Cuellar; Osen, Karen Sende; Gudbrandsen, Henrik; Sommerseth, Camilla; Wang, Zhaohui; Darell, Ove
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2491833
Date
2018
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  • Institutt for materialteknologi [1566]
  • Publikasjoner fra CRIStin - NTNU [19757]
Original version
Light Metals. 2018, 1559-1564.   https://doi.org/10.1007/978-3-319-72284-9_203
Abstract
The electrochemical de-oxidation process, also called FFC-Cambridge process, has been proposed previously to produce reactive metals and their alloys through reduction of their metal oxides. The process works by introducing metal oxides into a molten salt bath where it is electrolysed to form metal powders offering both economic and environmental benefits over the traditional metal production methods. Within the frame of the EU-financed project SCALE (GA 730105), SINTEF is investigating the optimal parameters of the direct electrolytic reduction of Sc2O3 and Sc2O3–Al2O3 precursors (dross from Al-Sc alloy production), giving Sc and Al-Sc metallic powders, respectively, in a molten CaCl2-based electrolyte at a working temperature of ca. 900 °C. The influence of the applied cathodic potential in the reduction mechanism and in the metal product has been studied.
Publisher
Springer Verlag
Journal
Light Metals

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