METHOD FOR INCREASING COERCIVE FORCE OF MAGNETS

The present invention provides a method for improving coercive force of magnets, this method comprises steps as follows: S2) coating step: coating a coating material on the surface of a magnet and drying it; and S3) infiltrating step: heat treating the magnet obtained from the coating step S2). The...

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Bibliographische Detailangaben
Hauptverfasser:	Diao Shulin, Hu Zhanjiang, Chen Ya, Yuan Wenjie, Dong Yi, Wu Shujie, Yi Haibo, Yuan Yi, Wang Yichuan, Miao Juchang
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BASIC ELECTRIC ELEMENTS ELECTRICITY INDUCTANCES MAGNETS PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SPRAYING OR ATOMISING IN GENERAL TRANSFORMERS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention provides a method for improving coercive force of magnets, this method comprises steps as follows: S2) coating step: coating a coating material on the surface of a magnet and drying it; and S3) infiltrating step: heat treating the magnet obtained from the coating step S2). The coating material comprises (1) metal calcium particles and (2) particles of a material containing a rare earth element; the rare earth element is at least one selected from Praseodymium, Neodymium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium and Lutetium. The method of the present invention can significantly increase coercive force of a permanent magnet material, while remanence and magnetic energy product hardly decrease. In addition, the method of the present invention can significantly decrease the amount of a rare earth element, and accordingly, decrease the production cost.