Improvement of coercivity of anisotropic Nd-Fe-BHDDR powders by Ga addition

被引：15
作者：
Sugimoto, S [1 ]
Murai, H [1 ]
Koike, N [1 ]
Nakamura, H [1 ]
Book, D [1 ]
Tezuka, N [1 ]
Kagotani, T [1 ]
Okada, M [1 ]
Homma, M [1 ]
Inomata, K [1 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 239卷 / 1-3期
关键词：
HDDR; anisotropy coercivity; Ga addition; hydrogen pressure;
D O I：
10.1016/S0304-8853(01)00620-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of Ga addition on the increase of coercivity of HDDR-treated Nd-Fe-B powders was investigated, The Ga addition suppresses grain growth and may decrease the region where magnetocrystalline anisotropy is reduced. In addition, a heat treatment in which the hydrogen pressure was decreased in steps during the recombination reaction resulted in good magnetic properties of B-1 = 1.44T,H-3(c) = 0.97 MA m(=1) and (BH)(max) = 308 kH m(-3), (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：444 / 446
页数：3
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