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Aluminum Substitutions in Nd-Fe-B Sintered Magnets

Published online by Cambridge University Press:  25 February 2011

J. K. Chen  and
G. Thomas
J. K. Chen
Affiliation:
Department of Materials Science and Mineral Engineering, University of California, Berkeley, CA 94720
G. Thomas
Affiliation:
Department of Materials Science and Mineral Engineering, and the National Center for Electron Microscopy, Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, University of California, Berkeley, CA 94720
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Abstract

A microstructural and microanalytical study of aluminum substituted Nd-Fe-B sintered permanent magnets were carried out to determine the effect, if any, of aluminum on structure, composition, and magnetic properties, particularly on the observed increase in coercivity. It was found that Al enrichment occurred in the Nd-rich phase at the grain boundaries. The possible role(s) of this enrichment on the observed coercivity increase are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 96: Symposium F – High Performance Permanent Magnet Materials , 1987 , 221
Copyright
Copyright © Materials Research Society 1987

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References

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