Microstructure and magnetic properties of anisotropic Nd-Fe-B magnets fabricated by single-stage hot deformation

被引：1
作者：
Tian Hao
Jin Dongzhe
Li Ying [1 ]
Zhu Mingyuan
Jin Hongming
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China
[2] Yanbian Univ, Coll Sci & Technol, Yanji 133000, Peoples R China
来源：
JOURNAL OF RARE EARTHS | 2006年 / 24卷
关键词：
anisotropy; Nd-Fe-B; single-stage hot deformation; microstructure; rare earths;
D O I：
暂无
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Anisotropic Nd-Fe-B magnets were fabricated by the single stage hot deformation (SSHD) method. The magnetic properties of the anisotropic Nd-Fe-B magnets are as follows: the maximum energy product is 234.7 kJ center dot m(-3), remanence 1.16 T and coercivity 684.3 kA center dot m(-1). A study of the relationship between microstructure and magnetic properties for the anisotropic Nd-Fe-B magnets was carried out. The results show that the grains of Nd2Fe14B have grown up preferentially along the direction perpendicular to the pressing direction.
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收藏
页码：318 / 320
页数：3
相关论文
共 10 条
[1]  
Grtinberger W., 1997, J ALLOY COMPD, V257, P293
[2]   Nanocrystalline NdFeB magnets fabricated by a modified hot-working process [J].
Kim, H ;
Cho, S ;
Kim, Y ;
Kim, H ;
Kapustin, GA .
JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) :8137-8139
[3]   Magnetic properties and texture of NdFeB magnets fabricated by current-applied-pressure-assisted process [J].
Kim, HT ;
Kim, YB ;
Kim, HS .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 224 (02) :173-179
[4]   A comparison of the magnetic properties and deformation behaviour of Nd-Fe-B magnets made from melt-spun, mechanically alloyed and HDDR powders [J].
Kirchner, A ;
Grunberger, W ;
Gutfleisch, O ;
Neu, V ;
Muller, KH ;
Schultz, L .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1998, 31 (14) :1660-1666
[5]   HRTEM studies of grain boundaries in die-upset Nd-Fe-Co-Ga-B magnets [J].
Kirchner, A ;
Thomas, J ;
Gutfleisch, O ;
Hinz, D ;
Müller, KH ;
Schultz, L .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 365 (1-2) :286-290
[6]   HOT-PRESSED NEODYMIUM-IRON-BORON MAGNETS [J].
LEE, RW .
APPLIED PHYSICS LETTERS, 1985, 46 (08) :790-791
[7]   Coercivity enhancement by Zn addition in hot deformed NdFeB magnets [J].
Li, Y ;
Kim, YB ;
Yoon, TS ;
Suhr, DS ;
Kim, TK ;
Kim, CO .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 242 :1369-1371
[8]   Simple hot deformation process for fabrication of anisotropic NdFeB magnet [J].
Li, Y ;
Kim, YB ;
Kim, MJ ;
Suhr, DS ;
Kim, TK ;
Kim, CO .
IEEE TRANSACTIONS ON MAGNETICS, 2000, 36 (05) :3309-3311
[9]   Preparation of anisotropic NdFeB magnets with different Nd contents by hot deformation (die-upsetting) using hot-pressed HDDR powders [J].
Liesert, S ;
Kirchner, A ;
Grunberger, W ;
Handstein, A ;
De Rango, P ;
Fruchart, D ;
Schultz, L ;
Muller, KH .
JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 266 (1-2) :260-265
[10]   MICROSTRUCTURE OF HOT-PRESSED AND DIE-UPSET NDFEB MAGNETS [J].
MISHRA, RK .
JOURNAL OF APPLIED PHYSICS, 1987, 62 (03) :967-971
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