Microstructure and annealing effects of NdFeB sintered magnets with Pr-Cu boundary addition

•Pr-Cu boundary addition was beneficial to the Hcj enhancement of NdFeB magnets.•4.3 and 6.2 kOe Hcj enhancements were obtained in 5 and 10 wt% Pr-Cu samples.•The Hcj enhancements for Pr-Cu samples were mainly related to the 480 °C annealing.•The micromagnetic parameter α increased from 0.491 to 0.6...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 2020-07, Vol.505, p.166749, Article 166749
Hauptverfasser:	Tang, Minghui, Bao, Xiaoqian, Zhou, Yishui, Lu, Kechao, Li, Jiheng, Gao, Xuexu
Format:	Artikel
Sprache:	eng
Schlagworte:	Annealing Annealing effect Annealing furnaces Coercivity Decoupling Diffusion Eutectic temperature Grain boundaries Heat exchange Microstructure Nd-Fe-B sintered magnets Permanent magnets Phases Quenching Sintering
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