DocumentCode :
952943
Title :
The studies of directional solidified RE-Co magnets
Author :
Fu, Heng-zhi ; Liu, Xin-Cai ; Shi, Zheng-Xing ; Wang, Le-Yi ; Tang, Wei ; Li, Chang-gui ; Song, Hou-Ding
Author_Institution :
Northwestern Polytech. Univ., Xi´´an, Shaanxi, China
Volume :
25
Issue :
5
fYear :
1989
fDate :
9/1/1989 12:00:00 AM
Firstpage :
3797
Lastpage :
3799
Abstract :
A new kind of rare-earth-cobalt material, Sm 20-24 wt.%/Ce 5-10 wt.%/Fe 8-15 wt.%/Cu 6-15 wt.%/Zr 1-3 wt.%/Co, has been made by directional solidification technology with liquid metal cooling (DSTLMC). The effects of different states, microstructures, and domains on the intrinsic coercive forces, iHc, were studied. The best magnetic properties of magnets prepared by the DSTLMC are B r=9500 Gs, iHc=5000 Oe, and (BH )m=18.0 MGOe. The magnets can be cut to 0.02 cm in thickness, turned, and drilled. Fine particles of 1/5 phase and zigzag and narrow domains that develop during aging increase the resistance to motion of remagnetization domains, which increases the intrinsic forces of the magnets 525% above those that exist after the preceding solution treatment
Keywords :
cerium alloys; cobalt alloys; coercive force; copper alloys; directional solidification; ferromagnetic properties of substances; iron alloys; magnetic domains; permanent magnets; remanence; samarium alloys; zirconium alloys; Sm-Ce-Fe-Cu-Zr-Co; aging; directional solidification; domains; intrinsic coercive forces; intrinsic forces; liquid metal cooling; magnetic properties; maximum energy product; microstructures; remagnetization domains; remanence; zigzag domains; Aging; Cooling; Copper; Inorganic materials; Magnetic liquids; Magnetic materials; Magnets; Microstructure; Surface treatment; Temperature;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.42436
Filename :
42436
Link To Document :
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