Fine-grained anisotropic powder from melt-spun ribbons

A method is disclosed for producing a rapidly-solidified, fine-grained, magnetically-anisotropic powder of the RE-Fe-B type. The rapidly-solidified material is optimally-quenched or slightly overquenched and is subjected to a hydrogen absorption-hydrogen desorption process that produces a fine-grain...

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Bibliographische Detailangaben
Hauptverfasser:	GREGORY PAUL MEISNER, JOHN JOSEPH CROAT, VISWANATHAN PANCHANATHAN
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS CASTING CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INDUCTANCES MAGNETS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POWDER METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	A method is disclosed for producing a rapidly-solidified, fine-grained, magnetically-anisotropic powder of the RE-Fe-B type. The rapidly-solidified material is optimally-quenched or slightly overquenched and is subjected to a hydrogen absorption-hydrogen desorption process that produces a fine-grained material containing the essential magnetic phase RE2TM14B and an intergranular phase and is magnetically anisotropic.