Nd-Fe-B die upset magnets produced from amorphous bulk materials

被引：9

作者：

Harada, T

Fujita, M

Kuji, T

机构：

[1] Mitsui Mining and Smelting Co., Ltd., Corporate R and D Center, Ageo, Saitama 362

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1996年 / 243卷 / 1-2期

关键词：

NdFeB; melt spun alloys; dynamic compaction; die upsetting; permanent magnets;

D O I：

10.1016/S0925-8388(96)02392-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Amorphous bulk materials of an Nd14Fe80B6 alloy (25 mm in diameter and 20 mm in thickness) were produced by dynamic compaction of amorphous melt-spun ribbons. The amorphous bulk materials were successfully hot deformed by die upsetting. Die upsetting of the amorphous bulk materials resulted in crystallization, leading to fine Nd2Fe14B particles with polygonal shape. X-ray diffraction and magnetic measurements confirmed that the polygonal Nd2Fe14B grains were crystallographically aligned. The Nd14Fe80B6 die upset magnets showed excellent value of the maximum energy products, exceeding 400 kJ m(-3).

引用

页码：139 / 143

页数：5