Coercivity mechanism of hydrogenation disproportionation desorption recombination processed Nd-Fe-B based magnets

被引：66
|
作者：
Li, W. F. [1 ]
Ohkubo, T. [1 ]
Hono, K. [1 ]
Nishiuchi, T. [2 ]
Hirosawa, S. [2 ]
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[2] NEOMAX Co, Hitachi Met, Osaka 6180013, Japan
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 05期
关键词：
D O I：
10.1063/1.2969416
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated the microstructure change of hydrogenation disproportionation desorption recombination processed Nd(12.5)Fe(73)Co(8)B(6.5) powders during the desorption recombination (DR) stage to understand the mechanism of the coercivity development in the DR process. A uniform Nd-enriched layer was found to form along the grain boundaries when coercivity starts to increase in the DR process, which should be the main reason for the coercivity development. However, the composition of this grain boundary layer was found to contain a high concentration of ferromagnetic elements. (C) 2008 American Institute of Physics.
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页数：3
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