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

  • Ke LvEmail author
  • Rui Dong
  • Mingjing Zhao
  • Guozheng Liu
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 217)

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.

Keywords

Nd–Fe–B Hot deformed Grain boundary diffusion 

Notes

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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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Baotou Research Institute of Rare EarthBaotouChina
  2. 2.University of Science and Technology Inner MongoliaBaotouChina

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