METALS AND METAL MATRIX COMPOSITES |
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Review on Rare Earth Alloy Diffused NdFeB Magnet |
LU Fei1,2,*, LIU Shufeng1,2, LI Hui1,2, ZHANG Shuai1,2, ZHAO Nana1,2, LI Fei1,2, YIN Gaotian1,2
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1 State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, Inner Mongolia, China 2 National Engineering Research Centre of Rare Earth Metallurgy and Functional Materials, Baotou 014030, Inner Mongolia, China |
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Abstract Grain boundary diffusion is an effective method to prepare sintered NdFeB permanent magnetic material with high performance and low cost, which has gained extensive attentions and has achieved industrial application. In this review, the developing status of rare earth alloys diffused sintered NdFeB magnets is reviewed. The technological superiority of structure optimization and performance improvement for alloy diffusion source in the diffused magnet is described. The application advantage of magnetron sputtering on the post-processing of the diffused magnets is introduced. At the same time, the existing problems and prospects of the diffused magnet are also summarized.
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Published: 25 August 2024
Online: 2024-09-10
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Fund:China Northern Rare Earth Group (BFXT-2021-D-0040, BFXT-2022-D-0035). |
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