Open AccessEFFECT OF HEAT TREATMENT ON THE MAGNETIC PROPERTIES OF AMORPHOUS Nd4Fe96-xBx ALLOYS
Author(s) -
Junxian Zhang,
Baogen Shen,
Yang Lin-yuan,
Wo Feng,
T. S. Ning,
Zhao Jian-Gao,
Haijuan Guo,
Zhan Wang
Publication year - 1990
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.39.1820
Subject(s) - coercivity , materials science , amorphous solid , crystallization , amorphous metal , quenching (fluorescence) , alloy , magnet , condensed matter physics , nuclear magnetic resonance , analytical chemistry (journal) , thermodynamics , metallurgy , crystallography , chemistry , optics , physics , chromatography , quantum mechanics , fluorescence
The effects of heat treatment on the hard magnetic properties and phase components are studied for amorphous Nd4Fe96-xBx alloys prepared by melt quenching technique. The crystallization temperature of amorphous Nd4Fe96-xBx alloys is higher than that of amorphous Fe100-xBx alloys at same B content in the range of 120-190 K. For 15≤x≤25, the samples crystallized from amorphous exhibit the hard magnetic properties, and consist of Nd2Fe14B, Fe3B and α-Fe. It is found that the intrinsic coercivity and magnetic energy product of the samples at optima1 heat treatment show a maximum of 2.8 kOe and 12 MGOe for Nd4Fe77B19 (x=19) alloy annealed at 670℃ for 2 min, respectively. These materials would presumably be used as an inexpensive bonded magnets, due to its higher values of Br and (BH)max.