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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Origins analysis of coercivity enhancement mechanism in diffusion-processed Nd-Fe-B magnets
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Origins analysis of coercivity enhancement mechanism in diffusion-processed Nd-Fe-B magnets

机译：扩散处理钕铁硼磁体矫顽力增强机理的成因分析

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The Nd13.5Fe79.5B7 bulk magnets were prepared by melt-spinning followed by hot-compaction and post-annealing. In the optimized benchmark magnet, the diffusion process was carried out by using La70Cu30, Nd70Cu30 and Dy70Cu30 alloy powders. Elementary distribution showed that Nd was coexistent with La but immiscible with Dy in the grain boundary (GB) regions. Crystallized GB phase was observed. The components of coercivity enhancement contributed from ferromagnetic decoupling, remedied grain surface and magnetically hardened grain surface were analyzed. Our results demonstrated that remedied grain surface and magnetically hardened grain surface contribute mostly to the enhanced coercivity, instead of ferromagnetic decoupling. (C) 2016 Elsevier B.V. All rights reserved.
机译：Nd13.5Fe79.5B7大块磁体是通过熔融纺丝，热压和后退火来制备的。在优化的基准磁体中，扩散过程是通过使用La70Cu30，Nd70Cu30和Dy70Cu30合金粉末进行的。元素分布表明，在晶界（GB）区域，Nd与La共存，但与Dy不互溶。观察到结晶的GB相。分析了铁磁去耦，矫正晶粒表面和磁硬化晶粒表面对矫顽力增强的影响。我们的结果表明，修复后的晶粒表面和磁硬化的晶粒表面主要有助于提高矫顽力，而不是铁磁去耦。 （C）2016 Elsevier B.V.保留所有权利。

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