| Numéro |
J. Phys. III France
Volume 2, Numéro 2, February 1992
|
|
|---|---|---|
| Page(s) | 267 - 273 | |
| DOI | https://doi.org/10.1051/jp3:1992125 | |
DOI: 10.1051/jp3:1992125
J. Phys. III France 2 (1992) 267-273
1 Institute of Physics, Technical University, PL-42-200 Czestochowa, Poland
2 All-Union Science-Research Institute of Electromechanics, VNIIEM, 107817 Moscow, U.S.S.R.
3 Institute of Chemistry, Technical University, PL-42-200 Czestochowa, Poland
© Les Editions de Physique 1992
J. Phys. III France 2 (1992) 267-273
Effect of grain size distribution on the properties of sintered (Nd, Dy)-(Fe, Co)-B magnets
S. Szymura1, Yu. M. Rabinovich2, H. Bala3, V. V. Sergeev2 and L. V. Potapova21 Institute of Physics, Technical University, PL-42-200 Czestochowa, Poland
2 All-Union Science-Research Institute of Electromechanics, VNIIEM, 107817 Moscow, U.S.S.R.
3 Institute of Chemistry, Technical University, PL-42-200 Czestochowa, Poland
(Received 6 August 1991, revised 31 October 1991, accepted 4 November 1991)
Abstract
The effect of grain size and grain size distribution on magnetic properties of the sintered Nd
14Dy
1.5Fe
68.5-Co
5Al
1Cr
2.5B
7.5 permanent magnet was investigated. As the average grain size or the volume fraction of the large grains increased, the magnetic
properties were reduced. The heterogeneous grain size distribution causes kink on the demagnetization curve. The effect of
intrinsic coercivity
on the thermomagnetic properties was estimated by measuring
and irreversible flux losses at elevated temperature.
© Les Editions de Physique 1992