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説明:

The study focuses on reducing costly heavy rare earth (HRE) elements Dy and Tb in NdFeB magnets while maintaining high coercivity for electric motors. By optimizing the grain boundary diffusion process (GBDP) with TbHx and Tb-containing alloys, researchers achieved highly efficient Tb utilization. A normalized coercivity gain of 3866 kA/m/wt% Tb (4.86 T/wt% Tb) was obtained with minimal remanence loss (1.45 T to 1.43 T). This approach enables HRE-balanced, high-performance magnets for sustainable e-motor applications.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Permanent Magnet, Nd-Fe-B, Coercivity, Diffusion process

刊行年月日: 2025-09-26

出版者: Wiley

掲載誌:

• Advanced Engineering Materials (ISSN: 14381656) e202501145

研究助成金:

• Deutsche Forschungsgemeinschaft 405553726
• Bundesministerium für Bildung und Forschung 03VP10552

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1002/adem.202501145

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更新時刻: 2025-09-30 12:30:19 +0900

MDRでの公開時刻: 2025-09-30 12:18:38 +0900