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Recent Development of Hot-Pressed-/Deformed Nd–Fe–B Permanent Magnets

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Physics and Engineering of Metallic Materials (CMC 2018)

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 217))

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Abstract

In recent years, the applications of rare earth permanent magnetic materials have been expanding, especially in the fields of wind power generation, new energy vehicles and energy-efficient appliances. The scarcity of natural heavy rare earth restricted the broad applications of Nd–Fe–B magnets. Therefore, enhancing the coercivity of the Nd–Fe–B magnets with free or lean heavy rare earth have drawn attention recently. The Nd–Fe–B magnets prepared by hot pressing and hot deformation process possess nanoscale lamellar grains, exhibiting potential to produce the high coercivity magnets without the addition of heavy rare earth elements. The progress in the research on the hot pressing and hot deformation technology for Nd–Fe–B production were summarized. The effect of alloying elements and preparation technologies on the microstructure and properties of hot-deformed magnets was introduced, providing references for preparing high performance Nd–Fe–B magnets by hot pressing and hot deformation process.

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Acknowledgements

This research was supported by the Inner Mongolia Autonomous Region Natural Science Foundation (Grant No. 2016BS0513) and Inner Mongolia University of Science and Technology Innovation Foundation (Grant No. 2016QDL-B04).

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Authors and Affiliations

  1. Baotou Research Institute of Rare Earth, Baotou, 014030, China

    Ke Lv, Mingjing Zhao & Guozheng Liu

  2. University of Science and Technology Inner Mongolia, Baotou, 014010, China

    Rui Dong

Authors
  1. Ke Lv
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  2. Rui Dong
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  3. Mingjing Zhao
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  4. Guozheng Liu
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Correspondence to Ke Lv .

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  1. Chinese Materials Research Society, Beijing, China

    Yafang Han

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Lv, K., Dong, R., Zhao, M., Liu, G. (2019). Recent Development of Hot-Pressed-/Deformed Nd–Fe–B Permanent Magnets. In: Han, Y. (eds) Physics and Engineering of Metallic Materials. CMC 2018. Springer Proceedings in Physics, vol 217. Springer, Singapore. https://doi.org/10.1007/978-981-13-5944-6_58

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  • DOI: https://doi.org/10.1007/978-981-13-5944-6_58

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