Optimizing the Heat Treatment of Rare Earth-Transition Metal Sintered Magnets

Abstract:

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Rare earth transition metals magnets, as for example SmCo5, NdFeB and Sm(CoCuFeZr)z magnets are, very often, submitted to a post-sintering heat treatment where the coercivity increases. In many cases, a slow cooling between the sintering and the annealing temperatures is applied. To optimize the time and cooling rate of heat treatment, it was developed a model using the finite volume method. This model takes into account the diffusivities of the different atom species and also the boundaries of phase diagrams.

Info:

Periodical:

Materials Science Forum (Volumes 660-661)

Edited by:

Lucio Salgado and Francisco Ambrozio Filho

Pages:

290-295

DOI:

10.4028/www.scientific.net/MSF.660-661.290

Citation:

M. F. de Campos and J. A. de Castro, "Optimizing the Heat Treatment of Rare Earth-Transition Metal Sintered Magnets", Materials Science Forum, Vols. 660-661, pp. 290-295, 2010

Online since:

October 2010

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Price:

$35.00

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