2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 3: Takano Intl. Symp. / Metals & Alloys Processing

Editors:	Kongoli F, Noldin JH, Mourao MB, Tschiptschin AP, D'Abreu JC
Publisher:	Flogen Star OUTREACH
Publication Year:	2015
Pages:	550 pages
ISBN:	978-1-987820-26-3
ISSN:	2291-1227 (Metals and Materials Processing in a Clean Environment Series)

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Simulation of the Dysprosium Diffusion in NdFeB Magnets

Jose Adilson de Castro¹; Marcos de Campos¹;
¹UFF - FEDERAL FLUMINENSE UNIVERSITY, Volta Redonda, Brazil;
Type of Paper: Regular
Id Paper: 120
Topic: 3

Abstract:

A possible method of reducing the amount of the scarce and expensive alloying element dysprosium in the alloys used for magnet production is the addition of dysprosium by means of diffusion, from a dysprosium rich surface layer. In this study, the optimum parameters for dysprosium diffusion are discussed. The kinetics indicate that high temperatures of the order of 900oC are more suitable for this process. Models based on the Fick 2nd law are discussed. Some situations admit analytical solutions for the Fick equations.

Keywords:

Magnetic; Modeling; Optimization; Process;


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Cite this article as:

de Castro J and de Campos M. Simulation of the Dysprosium Diffusion in NdFeB Magnets. In: Kongoli F, Noldin JH, Mourao MB, Tschiptschin AP, D'Abreu JC, editors. Sustainable Industrial Processing Summit SIPS 2015 Volume 3: Takano Intl. Symp. / Metals & Alloys Processing. Volume 3. Montreal(Canada): FLOGEN Star Outreach. 2015. p. 269-276.