DocumentCode :
1012808
Title :
Highly heat-resistant Nd-Fe-Co-B system permanent magnets
Author :
Arai, Shlgehiko ; Shibata, Tsugio
Author_Institution :
Meiji University, Kawasaki, Japan
Volume :
21
Issue :
5
fYear :
1985
fDate :
9/1/1985 12:00:00 AM
Firstpage :
1952
Lastpage :
1954
Abstract :
The magnetic properties and crystal structures of sintered Nd-Fe-Co-B magnets have been investigated over a wide range of chemical composition. Magnetic hardening is performed for samples by a post sintering heat treatment at 
C. The curie temperature of these samples are significantly improved with the increase of cobalt content. The sample with the composition of Nd16 Fe66 Co11 B7 shows remarkable magnetic properties, such as the maximum energy product of 42 MGOe and the reversible temperature coefficient of residual magnetization of 0.02 %/°C, Electron probe microanalysis and x-ray data suggests that the highly heat resistant magnet is produced when cobalt distributes only in the tetragonal matrix phase.
C. The curie temperature of these samples are significantly improved with the increase of cobalt content. The sample with the composition of NdKeywords :
Magnetic thermal factors; Permanent magnets; Chemicals; Cobalt; Electrons; Heat treatment; Iron; Magnetic properties; Magnetization; Neodymium; Permanent magnets; Temperature;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1985.1064033
Filename :
1064033
Link To Document :
