METHOD FOR PREPARING NEODYMIUM-IRON-BORON PERMANENT MAGNETIC MATERIAL

Disclosed is a method for preparing a NdFeB permanent magnetic material. The method comprises: preparing a NdFeB magnetic material, depositing heavy rare earth particles or high-melting particles on NdFeB magnetic powder by means of a physical vapor deposition process; orientation molding and then s...

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Bibliographische Detailangaben
Hauptverfasser:	LI, Hui, ZHANG, Zhihong, SUN, Liangcheng, BAI, Yang, XIA, Feng, YANG, Fan, WANG, Feng, CHENG, Yu, ZHENG, Tiancang, YANG, Zhanfeng, LIU, Shufeng, LIU, Xiaoyu, LU, Fei, CHEN, Beixin, LOU, Shupu, LIU, Jixiang, LI, Jingya, WANG, Yu, SUN, Caina
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CASTING ELECTRICITY INDUCTANCES MAGNETS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	Disclosed is a method for preparing a NdFeB permanent magnetic material. The method comprises: preparing a NdFeB magnetic material, depositing heavy rare earth particles or high-melting particles on NdFeB magnetic powder by means of a physical vapor deposition process; orientation molding and then sintering to obtain a NdFeB magnet. By the present invention, the heavy rare earth particles or high-melting particles are dispersed evenly within the magnet at the grain boundary, with coercive force of the magnet being increased and the amount of heavy rare earth used being reduced, so that the coercive force of the NdFeB magnet is significantly increased.