HIGH-PERFORMANCE SINTERED NEODYMIUM-IRON-BORON MAGNET AND PREPARATION METHOD THEREFOR
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United States of America
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Mar 6, 2025
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Jul 20, 2022
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Jul 20, 2022
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Abstract
A high-performance sintered neodymium-iron-boron magnet and a preparation method therefor are provided. The magnet is prepared by means of diffusion heat treatment, using R1mFenBpM2w as a substrate and the alloy RHxM1yBz as a diffusion source. A detachable material reaction bucket is employed for diffusion. The diffusion source can be reused to reduce the production cost of the sintered neodymium-iron-boron magnet and can be applied to a magnet of a large size, and can in particular ensure mass production of a cost-effective sintered neodymium-iron-boron product with a thickness of 8-30 mm in an orientation direction.
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