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Melt-Spun Permanent Magnet Alloy with Enhanced Isotropic Remanence

Published online by Cambridge University Press:  26 February 2011

A. M. Kadin ,
R. W. McCallum ,
G. B. Clemente  and
J. E. Keem
A. M. Kadin
Affiliation:
Ovonic Synthetic Materials Co., Inc., A Subsidiary of Energy Conversion Devices, Inc., Troy, Michigan 48084
R. W. McCallum
Affiliation:
Ames Laboratory - U.S. Department of Energy, Ames, Iowa 50011.
G. B. Clemente
Affiliation:
Ovonic Synthetic Materials Co., Inc., A Subsidiary of Energy Conversion Devices, Inc., Troy, Michigan 48084
J. E. Keem
Affiliation:
Ovonic Synthetic Materials Co., Inc., A Subsidiary of Energy Conversion Devices, Inc., Troy, Michigan 48084
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Abstract

Rapid solidification onto a copper quench surface (melt-spinning) has been used to fabricate a high-performance permanent magnet alloy (Ovonic Hi-Rem™) based on the Nd-Fe-B class of materials. Crucial idditions of alloying elements are combined with careful control over quench parameters to yield a random assembly of microcrystallites, with macrosconically isotropic magnetic properties including values of remanent induction that can exceed 10 kG and maximum energy products greater than 20 MGOe. These values exceed those expected from conventional randomly oriented magnets. The enhanced magnetic performance is related to results of x-ray diffraction and electron microscopy.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 80: Symposium G – Science and Technology of Rapidly Quenched Alloys , 1986 , 385
Copyright
Copyright © Materials Research Society 1987

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