EFFECTS OF HEAT-TREATMENTS ON COERCIVITY AND MICROSTRUCTURE IN ND15FE77B8 SINTERED MAGNETS

Authors
PI SH CHOI JM KIM YG
Citation
Sh. Pi et al., EFFECTS OF HEAT-TREATMENTS ON COERCIVITY AND MICROSTRUCTURE IN ND15FE77B8 SINTERED MAGNETS, Materials science & engineering. B, Solid-state materials for advanced technology, 32(1-2), 1995, pp. 89-91
Citations number
9
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Materials science & engineering. B, Solid-state materials for advanced technology → ACNP
ISSN journal
09215107
Volume
32
Issue
1-2
Year of publication
1995
Pages
89 - 91
Database
ISI
SICI code
0921-5107(1995)32:1-2<89:EOHOCA>2.0.ZU;2-3
Abstract
The effects of psst-sintering heat treatments on the structure and pro perties in sintered Nd15Fe77B8 magnets have been investigated. In the as-sintered sample, the crystal structure of the Nd-rich phase was f.c .c., while the Nd-rich phase transformed into a superlattice after hea t treatment at 600 degrees C for 1 h. However, the structures of Nd2Fe 14B and B-rich (Nd1+epsilonFe4B4) phases did not change upon heat trea tment. It is suggested that the formation of the superlattice enhances the coercivity of the magnets.