NEODYMIUM-IRON-BORON PERMANENT MAGNET AND PREPARATION METHOD AND USE THEREOF

To provide neodymium-iron-boron permanent magnet and a preparation method and use thereof.SOLUTION: The present disclosure belongs to the technical field of permanent magnets. In the present disclosure, Ga, In, and Sn are added into a neodymium-iron-boron permanent magnet, avoiding the problem of hi...

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Bibliographische Detailangaben
Hauptverfasser: SU MANYOU, FENG YONGHUAI, ZHANG HAIYUAN, WANG YUE, LI YANLI, LIU CHUNGUANG, XIA FENG, LIU JIXIANG, LIU GAZHEN
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide neodymium-iron-boron permanent magnet and a preparation method and use thereof.SOLUTION: The present disclosure belongs to the technical field of permanent magnets. In the present disclosure, Ga, In, and Sn are added into a 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 eliminating a step of cold isostatic pressing after molding, thereby saving manufacturing costs, and at the same time resulting in a neodymium-iron-boron permanent magnet 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-end application market.SELECTED DRAWING: None 【課題】ネオジム鉄ホウ素永久磁石およびその製造方法と使用を提供する。【解決手段】本発明は、永久磁石の技術分野に属する。本発明は、Ga、InおよびSn元素をネオジム鉄ホウ素永久磁石に導入し、従来技術における有機添加剤の導入によって引き起こされるネオジム鉄ホウ素永久磁石における高炭素および酸素含有量の問題を回避し、成形後の冷間等方圧加圧工程を排除し、製造コストを節約し、総合性能に優れたネオジム鉄ホウ素永久磁石を実現する。実施例の結果は、本発明により提供されるネオジム鉄ホウ素永久磁石が、高い残留磁気および高い保磁力を有する52Hネオジム鉄ホウ素永久磁石であり、残留磁気が20℃で14.4kGsに達することができ、固有保磁力が18.5kOeに達することができ、ハイエンドアプリケーション市場におけるネオジム鉄ホウ素永久磁石の競争力を高めるのに役立つことを示している。【選択図】なし