期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 248, 期 3, 页码 432-440出版社
ELSEVIER
DOI: 10.1016/S0304-8853(02)00334-7
关键词
isotropic magnets; anisotropic magnets; magnet fabrication
The composition, microstructure and processing of NdFeB-type permanent magnets are all critical factors for the successful production of high performance magnet components. Three common fabrication routes can be used to categorize these NdFeB-based bulk magnets: sintering, polymer bonding and hot deformation. Generally, the former type of magnet has a high-energy product (30-50 MGOe), full density and a relatively simple shape. Bonded magnets have intermediate energy products (10-18 MGOe), lower density and can be formed into intricate net-shapes. Hot deformed magnets possess full density, intermediate to high-energy products (15-46 MGOe), isotropic or anisotropic properties and have the potential to be formed into net shapes. This article discusses the critical issues of improved magnetic performance, environmental stability, net-shape formability and magnetization behavior for the main categories of NdFeB magnets. (C) 2002 Elsevier Science B.V. All rights reserved.
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