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Aluminum Substitutions in Nd-Fe-B Sintered Magnets

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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.

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Authors and Affiliations

  1. Department of Materials Science and Mineral Engineering, University of California, 94720, Berkeley, CA, USA

    J. K. Chen

  2. 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, 94720, Berkeley, CA, USA

    G. Thomas

Authors
  1. J. K. Chen
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  2. G. Thomas
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Chen, J.K., Thomas, G. Aluminum Substitutions in Nd-Fe-B Sintered Magnets. MRS Online Proceedings Library 96, 221 (1987). https://doi.org/10.1557/PROC-96-221

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  • DOI: https://doi.org/10.1557/PROC-96-221

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