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HDDR各向异性钕铁硼磁粉研究及应用进展

杨俊 黄东亚 王岳 莫漫漫 林百春 杨澍

杨俊, 黄东亚, 王岳, 莫漫漫, 林百春, 杨澍. HDDR各向异性钕铁硼磁粉研究及应用进展[J]. 材料开发与应用, 2023, 38(2): 97-108.
引用本文: 杨俊, 黄东亚, 王岳, 莫漫漫, 林百春, 杨澍. HDDR各向异性钕铁硼磁粉研究及应用进展[J]. 材料开发与应用, 2023, 38(2): 97-108.
YANG Jun, HUANG Dongya, WANG Yue, MO Manman, LIN Baichun, YANG Shu. Research and Application Progress on Production of Anisotropic NdFeB Magnetic Powder by HDDR Process[J]. Development and Application of Materials, 2023, 38(2): 97-108.
Citation: YANG Jun, HUANG Dongya, WANG Yue, MO Manman, LIN Baichun, YANG Shu. Research and Application Progress on Production of Anisotropic NdFeB Magnetic Powder by HDDR Process[J]. Development and Application of Materials, 2023, 38(2): 97-108.

HDDR各向异性钕铁硼磁粉研究及应用进展

详细信息
    作者简介:

    杨俊,男,1987年生,工程师,研究方向:稀土磁性材料。

  • 中图分类号: TM273

Research and Application Progress on Production of Anisotropic NdFeB Magnetic Powder by HDDR Process

  • 摘要: 吸氢-歧化-脱氢-再复合工艺(HDDR)是生产各向异性钕铁硼磁粉的有效方法,其制备的各向异性粘结磁体性能高,重量轻,在提高微特电机功效、减轻重量等方面发挥着重要作用,目前在汽车、无人机等领域已产业化应用。为了提高磁粉性能,科研人员仍不断探究HDDR工艺与各向异性机理,采用晶界扩散法优化磁粉晶界结构,提高磁粉矫顽力与温度稳定性,同时将上述成果应用到废旧烧结钕铁硼回收中,节约稀土资源。HDDR各向异性磁粉性能显著高于各向同性磁粉的,但形变塑性次之,研究者试图将其作为热变形磁体前驱原材料,进一步提升热变形磁体性能。HDDR工艺细化晶粒的效果为提高烧结钕铁硼矫顽力提供了一条新的研究途径,但目前还未获得理想的成果。本研究主要介绍近年来HDDR工艺与机理的发展以及其在稀土磁体回收、热变形磁体、烧结磁体等方面的应用情况。

     

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