Coercivity enhancement and thermal-stability improvement in the melt-spun NdFeB ribbons by grain boundary diffusion

被引：17

作者：

Xie, Jiajun ^{[1
]}

Yuan, Chao ^{[1
]}

Luo, Yang ^{[1
]}

Yang, Yuanfei ^{[1
]}

Hu, Bin ^{[1
]}

Yu, Dunbo ^{[1
]}

Yan, Wenlong ^{[1
]}

机构：

[1] Grirem Adv Mat Co Ltd, Natl Engn Res Ctr Rare Earth Mat, Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2018年 / 446卷

关键词：

Melt-spun NdFeB; Coercivity; Thermal stability; Grain boundary diffusion; MAGNETS; POWDERS; ALLOYS; MGOE;

D O I：

10.1016/j.jmmm.2017.08.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Rapidly quenched NdFeB ribbons with high coercivity were obtained by Nd70Cu30 diffusion process. Samples with a high coercivity of 22.02 kOe at room temperature were obtained after grain boundary diffusion with 20 wt% Nd70Cu30 alloys. The NdCu diffusion process promoted grain growth in the ribbons, and grain boundary phases were formed with Cu segregation among NdFeB grains. Coercivity above 10 kOe at 150 degrees C was achieved in the bonded magnets with NdCu content over 10 wt%. The flux loss of bonded magnets was reduced by similar to 32% at 120 degrees C after diffusion treatment with only a small amount (2 wt%) of NdCu. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：210 / 213

页数：4

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