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

被引：178

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

页码：297 / 300

页数：4

共 11 条

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