MATEC Web Conf.
Volume 96, 2017III International Symposium “Fundamental Aspects of Rare-Earth Elements Exploration, Mining and Separation and Modern Materials Engineering” (REE-2016)
|Number of page(s)||4|
|Published online||19 January 2017|
Production of Nd-Fe Foundry Alloy by Electrolysis in Molten Salts
1 National Research Nuclear University “Moscow Engineering Physics Institute”, Moscow, Russian Federation
2 National Research Tomsk State University, Tomsk, Russian Federation
* Corresponding author: VLSofronov@mephi.ru
Nd-Fe-B-based permanent magnets have the highest magnetic characteristics. To improve their quality, one generally applies the technique of solid-phase alloying by materials with high content of neodymium, dysprosium, terbium, i.e. rare-earth metal (REM)-Fe(Co) foundry alloys. The paper presents the results of the study of the manufacturing process of Nd-Fe foundry alloys, with composition being close to eutectic, by electrolysis of neodymium oxides and fluorides from chloride and fluoride melts. It is shown that in the oxide electrolysis a sufficiently high current efficiency (over 98 %) is obtained. This is a promising method of obtaining of rare earth-containing materials.
© The Authors, published by EDP Sciences, 2017
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