Bulk anisotropic composite rare earth magnets

被引：45

作者：

Lee, D.

Bauser, S.

Higgins, A.

Chen, C.

Liu, S.

Huang, M. Q.

Peng, Y. G.

Laughlin, D. E.

机构：

[1] Univ Dayton, Magnet Lab, Dayton, OH 45469 USA

[2] Universal Energy Syst Inc, Dayton, OH 45432 USA

[3] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2006年 / 99卷 / 08期

关键词：

D O I：

10.1063/1.2171959

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bulk anisotropic composite Nd13.5Fe80Ga0.5B6/alpha-Fe and Nd14Fe79.5Ga0.5B6/Fe-Co magnets with (BH)(max)=45-50 MG Oe have been synthesized by blending a Nd-Fe-Ga-B powder with an alpha-Fe or Fe-Co powder followed by hot compaction at 600-700 degrees C and hot deformation (die upsetting) at 850-950 degrees C with a height reduction of 71%. The composite Nd13.5Fe80Ga0.5B6/alpha-Fe and Nd14Fe79.5Ga0.5B6/Fe-Co magnets show microstructures consisting of a very large soft phase up to similar to 50 mu m, which is more than 1000 times larger than the upper size limit of the soft phase expected from the existing models of interface exchange coupling. (C) 2006 American Institute of Physics.

引用

页数：3

共 5 条

[1]

CROAT JJ, 1990, P 11 INT WORKSH REM, V1, P1

[2] THE EXCHANGE-SPRING MAGNET - A NEW MATERIAL PRINCIPLE FOR PERMANENT-MAGNETS [J].