Improvement of coercivity of sintered NdFeB permanent magnets by heat treatment

被引：302

作者：

Vial, F

Joly, F

Nevalainen, E

Sagawa, M

Hiraga, K

Park, KT

机构：

[1] Pechinery CRV, Pechiney Ctr Rech Voreppe CRV, Ctr Alp, F-38341 Voreppe, France

[2] Magnequench UG Inc, Valparaiso, IN 46383 USA

[3] Intermetallies Co Ltd, Kyoto 6158206, Japan

[4] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 242卷

关键词：

permanent magnet-rare earth; sintered magnets; heat-treatment; grain boundaries; microstructure; coercivity;

D O I：

10.1016/S0304-8853(01)00967-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The purpose of this study was to better understand the metallurgical transformations that occur during beat treatment of Nd-based magnets. DSC analysis and microstructural investigations of the grain boundaries with SEM and TEM were carried out, DSC permitted to optimize the heat treatment. Microstructural investigations always showed the presence of thin and smooth RE-rich film, associated with the highest coercivity. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：1329 / 1334

页数：6

共 8 条

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Fidler J., 2000, JPN I METAL, pS45

[2] HIGH-RESOLUTION ELECTRON-MICROSCOPY OF GRAIN-BOUNDARIES IN SINTERED FE77ND15B8 PERMANENT-MAGNETS [J].