Production of thick high-performance sintered neodymium magnets by grain boundary diffusion treatment with dysprosium-nickel-aluminum alloy

被引：172
作者：
Oono, Naoko [1 ]
Sagawa, Masato [2 ]
Kasada, Ryuta [1 ]
Matsui, Hideki [1 ]
Kimura, Akihiko [1 ]
机构：
[1] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan
[2] Intermetall Co Ltd, Kyoto 6158245, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2011年 / 323卷 / 3-4期
关键词：
Sintered Nd-Fe-B; Dy addition; Grain boundary diffusion treatment; Improved coercivity; MICROSTRUCTURE ANALYSIS; VAPOR SORPTION;
D O I：
10.1016/j.jmmm.2010.09.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel grain boundary diffusion (GBD) treatment with a Dy-Ni-Al eutectic alloy powder allowed Dy to penetrate into sintered plates of Nd-Fe-B magnet as thick as 5 mm. The coercivity of the magnet was increased from a value of 1160 kA/m (14.5 kOe) to 1760 kA/m (22 kOe). This was achieved without any marked decrease in remanance and with a high squareness. (C) Elsevier B.V. All rights reserved.
引用
收藏
页码：297 / 300
页数：4
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