Study on key techniques for producing high performance NdFeB sintered permanent magnets

被引：0

作者：

Zhang, SG ^{[1
]}

Li, HW ^{[1
]}

Zhao, JS ^{[1
]}

Yu, DB ^{[1
]}

Xu, J ^{[1
]}

Zhang, Y ^{[1
]}

机构：

[1] Gen Res Inst NonFerrous Met, Beijing 100088, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2002年 / 20卷 / 06期

关键词：

rare earths; NdFeB sintered magnets; high performance;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

High energy products (BH)(max) of 365 and 310 kJ(.)m(-3) with intrinsic coercivity H-i(e) of 1640 kA(.)m(-1) of NdFeB sintered magnets were produced. Some new techniques were applied, such as thin NdFeB ingot technique, narrow particle distribution on jet mill, low oxygen content control and high aligned magnetic field press. It is necessary to produce thin NdFeB ingot with fine flake crystal, narrow particle distribution, the average size of NdFeB powders less than 4.0 mum uniform microstructure, high oriented Nd2Fe14B small grains, and finally high performance NdFeB sintered magnets were prepared.

引用

页码：587 / 591

页数：5