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Magnetic Hardening Mechanism in Sintered R-Fe-B Permanent Magnets

Published online by Cambridge University Press:  25 February 2011

M. Sagawa  and
S. Hirosawa
M. Sagawa
Affiliation:
Sumitomo Special Metals Co. Ltd., Mishimagun, Osaka 618, Japan
S. Hirosawa
Affiliation:
Sumitomo Special Metals Co. Ltd., Mishimagun, Osaka 618, Japan
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Abstract

The state-of-the-art description of the magnetic hardening mechanism in the sintered Nd-Fe-B permanent magnet is given. Recent experimental results concerning the coercivity-anisotropy (Hc -HA) correlation in B-rich Pr-Fe-B and Nd-Fe-B sintered magnets and the inhluence of the surface conditions of the sintered Nd-Fe-B magnets on the coercivity are reported. These results are interpreted in terms of the μ0Hc versus cμ0 HA -NIS plot, where I is the spontaneous magnetization of R2 Fe14 (R=Pr or Nd) and N the effective demagnetization field coefficient.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 96: Symposium F – High Performance Permanent Magnet Materials , 1987 , 161
Copyright
Copyright © Materials Research Society 1987

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References

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