| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-611 - C8-612 | |
| DOI | https://doi.org/10.1051/jphyscol:19888279 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-611-C8-612
DOI: 10.1051/jphyscol:19888279
Siemens AG, Research Laboratories, D-8520 Erlangen, F.R.G.
J. Phys. Colloques 49 (1988) C8-611-C8-612
DOI: 10.1051/jphyscol:19888279
MAGNETIC PROPERTIES OF RAPIDLY QUENCHED (Nd, Pr)2 (Fe,Co)14B-TYPE ALLOYS
J. Wecker et L. SchultzSiemens AG, Research Laboratories, D-8520 Erlangen, F.R.G.
Abstract
The coercivity Hci of rapidly quenched Nd-Fe-B is linked to the multiphase structure of the alloys : high coercivities require the suppression of the FeNd solid solution and the exictence of the intergranular Nd-rich phase. In quarternary Pr-Fe-Co-B alloys Hci and the remanence Jr depend in the same way on Co content as in the Nd-Fe-Co-B system. However, compared with rapidly quenched Nd-Co-B samples, as-quenched Pr-Co-B alloys show huge coercivities as a result of the favourable intrinsic magnetic properties. Again, magnetic hardness is not only coupled to the grain size but also to the existence of secondary phases.