RARE-EARTH NITRIDES AND CARBIDES - A NEW CLASS OF PERMANENT-MAGNET MATERIALS

被引:5
|
作者
HADJIPANAYIS, GC [1 ]
WANG, YZ [1 ]
SINGLETON, EW [1 ]
YELON, WB [1 ]
机构
[1] UNIV MISSOURI,RES REACTOR,COLUMBIA,MO 65201
关键词
D O I
10.1007/BF02648617
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The most recent and exciting development in permanent magnet research is the discovery of rare-earth nitrides and carbides with the 2:17- and 1:12-type structures. Nitrogen and carbon enter the lattice interstitially, expanding the volume of the unit cell and leading to a drastic increase in the Curie temperature (up to 300-degrees-C) and to dramatic changes in the magnetic anisotropy. Sm2Fe17(N(C))x and Nd(Fe,T)12Nx now have large magnetic anisotropy fields exceeding 9 and 7 T, respectively. Large coercivities have already been obtained in mechanically alloyed powders, melt-spun ribbons, and Zn-bonded Sm2Fe17Nx magnets.
引用
收藏
页码:193 / 204
页数:12
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