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Optimization of Liquid Dynamic Compaction for Fe-Nd-B Magnet Alloys

Published online by Cambridge University Press:  25 February 2011

Mauri K. Veistinen ,
Y. Hara ,
E. J. Lavernia ,
R. C. O'Handley  and
N. J. Grant
Mauri K. Veistinen
Affiliation:
Permanent address, Outokumpu Inc., Toolonkatu 4, P.O.Box 280, 00100 Helsinki, Finland
Y. Hara
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
E. J. Lavernia
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
R. C. O'Handley
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
N. J. Grant
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
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Abstract

Permanent magnets from the Fe77Nd15B8 alloy were produced using liquid dynamic compaction (LDC). Process parameters such as gas and metal mass flow rates were carefully controlled to refine the microstructure. Accordingly, grain sizes between 0.1 and 5 microns were achieved in the LDC compact. In contrast to our earlier LDC results high intrinsic coercivity in excess of 7500 Oe was obtained for thick (> 7 nm) as-LDC'd samples with lower neodymium content.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 96: Symposium F – High Performance Permanent Magnet Materials , 1987 , 93
Copyright
Copyright © Materials Research Society 1987

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References

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