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    NEODYMIUM-IRON-BORON PERMANENT MAGNET AND PREPARATION METHOD AND USE THEREOF
    2.
    发明公开
    NEODYMIUM-IRON-BORON PERMANENT MAGNET AND PREPARATION METHOD AND USE THEREOF 审中-公开

    公开(公告)号：EP4098383A1

    公开(公告)日：2022-12-07

    申请号：EP21204102.4

    申请日：2021-10-22

    申请人： Baotou Jinshan Magnetic Material Co. Ltd

    发明人： XIA, Feng ,  WANG, Yu ,  LI, Yanli ,  FENG, Yonghuai ,  LIU, Chunguang ,  ZHANG, Haiyuan ,  LIU, Jixiang ,  SU, Manyou ,  LIU, Gazhen

    IPC分类号： B22F5/00 ,  B22F9/02 ,  C22C1/04 ,  C22C38/00 ,  H01F1/057 ,  H01F41/02 ,  B22F9/04

    摘要： The present disclosure provides a neodymium-iron-boron permanent magnet, a preparation method and use thereof, and belongs to the technical field of permanent magnets. In the present disclosure, Ga, In and Sn are added into the neodymium-iron-boron permanent magnet, avoiding the problem of high carbon and oxygen content in the neodymium-iron-boron permanent magnet caused by the introduction of organic additives in the prior art, and a cold isostatic pressing after molding, thereby saving manufacturing costs, and at the same time resulting in a neodymium-iron-boron permanent magnets with excellent comprehensive performance. The results of the examples show that the neodymium-iron-boron permanent magnet provided by the present disclosure is a 52H neodymium-iron-boron permanent magnet with high remanence and high coercive force, and has a remanence up to 14.4 kGs at 20 °C, and an intrinsic coercive force up to 18.5 kOe, which is conducive to enhancing the competitiveness of neodymium-iron-boron permanent magnets in the high-technology application market.