Effect of intermediate argon treatment on microstructure and anisotropy of HDDR-treated Nd-Fe-B-based alloy powders

被引：0
|
作者：
Itakura, M [1 ]
Mishima, K [1 ]
Eshima, M [1 ]
Kuwano, N [1 ]
Oki, K [1 ]
Nakayama, R [1 ]
Ishii, Y [1 ]
Morimoto, K [1 ]
机构：
[1] Kyushu Univ, Dept Appl Sci Elect & Mat, Kasuga, Fukuoka 8168580, Japan
来源：
JAPAN INSTITUTE OF METALS, PROCEEDINGS, VOL 12, (JIMIC-3), PTS 1 AND 2: SOLID - SOLID PHASE TRANSFORMATIONS | 1999年
关键词：
hydrogenation-decomposition-desorption-recombination (HDDR) process; Nd-Fe-B magnet; transmission electron microscopy; microstructure; magnetic anisotropy;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Changes in microstructure of Nd-Fe-Co-B-Ga-Zr and Nd-Dy-Fe-Co-B-Ga-Zr alloys with the intermediate argon (IA) treatment added in the hydrogenation-decomposition-desorption-recombination (HDDR) process were investigated by transmission electron microscopy (TEM). It was found that during the IA treatment only alpha-(Fe,Co) grains grow rapidly and NdH2 particles almost keep their initial size. Selected area electron diffraction (SAED) analysis reveals that preferred orientation alignment of the alpha-(Fe,Co) grains is improved by the IA treatment. It is suggested that the rapid growth of alpha-(Fe,Co) grains during the IA treatment leads the recombined Nd-2(Fe,Co)(14)B fine grains to improve the alignment of c-axes, and therefore to achieve a significant magnetic anisotropy.
引用
收藏
页码：233 / 236
页数：4
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