Demagnetization process and coercivity for anisotropic HDDR NdFeB bonded magnets

被引:0
作者
Gao, RW [1 ]
Zhang, JC
Meng, XH
Zhang, YJ
机构
[1] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China
[2] Shandong Met Res Inst, Jinan 250014, Peoples R China
关键词
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The demagnetization process and the coercivity mechanism for anisotropic HDDR Nd(Fe,Co)B bonded magnets were studied by comparing the dependence of coercivity on the alignment field applied while the powders were pressed. The results showed that both the remanence and the coercivity of magnet increased with increasing alignment field. The demagnetization process of the magnet can be classified as the nucleation process inside the grains and the domain-wall motion between the grains. The combined effect of two processes determines the coercivity of HDDR NdFeB bonded magnets.
引用
收藏
页码:445 / 446
页数:2
相关论文
共 6 条
[1]   Effects of the degree of grain alignment on the hard magnetic properties of sintered NdFeB magnets [J].
Gao, RW ;
Zhang, DH ;
Li, H ;
Zhang, JC .
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1998, 67 (03) :353-356
[2]   COERCIVITY AND ITS DEPENDENCE ON THE STRENGTH OF ALIGNMENT MAGNETIC-FIELD IN ND-FE-B SINTERED MAGNETS [J].
GAO, RW ;
ZHANG, DH ;
LI, H ;
JIANG, ST ;
ZHOU, SZ ;
LI, F ;
ZHANG, LD .
JOURNAL OF APPLIED PHYSICS, 1995, 78 (02) :1156-1159
[3]   Microstructure of solid-HDDR Nd-Fe-B:Zr magnets [J].
Matzinger, M ;
Fidler, J ;
Fujita, A ;
Harris, IR .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1996, 157 :54-56
[4]   MICROSTRUCTURES AND CRYSTALLOGRAPHIC ORIENTATION OF CRYSTALLINE GRAINS IN ANISOTROPIC ND-FE-CO-B-(GA OR ZR) MAGNET POWDERS PRODUCED BY THE HYDROGENATION-DECOMPOSITION-DESORPTION-RECOMBINATION PROCESS [J].
NAKAYAMA, R ;
TAKESHITA, T ;
ITAKURA, M ;
KUWANO, N ;
OKI, K .
JOURNAL OF APPLIED PHYSICS, 1994, 76 (01) :412-417
[5]   MAGNETIZATION PROCESS IN RAPIDLY SOLIDIFIED NEODYMIUM-IRON-BORON PERMANENT-MAGNET MATERIALS [J].
PINKERTON, FE ;
VANWINGERDEN, DJ .
JOURNAL OF APPLIED PHYSICS, 1986, 60 (10) :3685-3690
[6]   Anisotropic Nd-Fe-B bonded magnets made from HDDR powders [J].
Takeshita, T ;
Morimoto, K .
JOURNAL OF APPLIED PHYSICS, 1996, 79 (08) :5040-5044