| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-661 - C8-662 | |
| DOI | https://doi.org/10.1051/jphyscol:19888300 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-661-C8-662
DOI: 10.1051/jphyscol:19888300
1 Centre d'Etudes Nucléaires de Grenoble, Département de Métallurgie, 85X, 38041 Grenoble Cedex, France
2 Centre d'Etudes Nucleaires de Grenoble, Département de Métallurgie, 85X, 38041 Grenoble Cedex, France
J. Phys. Colloques 49 (1988) C8-661-C8-662
DOI: 10.1051/jphyscol:19888300
THE Nd15Fe77B8 MICROSTRUCTURE : SOME EFFECTS OF OXYGEN FOR DIFFERENT SOLIDIFICATION CONDITIONS
D. Cochet-Muchy1 et S. Païdassi21 Centre d'Etudes Nucléaires de Grenoble, Département de Métallurgie, 85X, 38041 Grenoble Cedex, France
2 Centre d'Etudes Nucleaires de Grenoble, Département de Métallurgie, 85X, 38041 Grenoble Cedex, France
Abstract
Some microstructural effects of oxygen have been observed in Nd15Fe77B8 samples corresponding to various oxygen concentrations and solidification conditions : as-cast, oxidized in air near 300 °C, oxidized with the surface remelted by electron beam, devitrified flow-cast ribbons. It is particularly shown that the oxidation process promotes the growth of glassy regions containing strongly textured α-Fe precipitates.