Hard magnetic samarium-cobalt alloy powder produced cheaply

A hard magnetic samarium-cobalt alloy powder is produced intensive fine grinding of a starting alloy powder and disproportionation in a hydrogen atmosphere and then hydrogen desorption heat treatment. A hard magnetic samarium-cobalt alloy powder is produced by: (a) mixing the individual and/or pre-a...

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Bibliographische Detailangaben
Hauptverfasser:	GUTFLEISCH, OLIVER., BIRMINGHAM, GB, SCHULTZ, LUDWIG, DR., 01109 DRESDEN, DE, KUBIS, MICHAEL, 01187 DRESDEN, DE
Format:	Patent
Sprache:	eng ; 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:	A hard magnetic samarium-cobalt alloy powder is produced intensive fine grinding of a starting alloy powder and disproportionation in a hydrogen atmosphere and then hydrogen desorption heat treatment. A hard magnetic samarium-cobalt alloy powder is produced by: (a) mixing the individual and/or pre-alloyed alloying element powders to form a starting powder; (b) subjecting the starting powder to intensive fine grinding and disproportionation in a hydrogen atmosphere at above 0.15 MPa at 50-500 deg C for 1-100 hr.; and (c) carrying out a hydrogen desorption heat treatment at 500-900 deg C. Preferred Alloy: The starting alloy powder has the composition SmxCo100-x or SmxCo100-x-a-b-cFeaCubZrc, where x = 10 to 30 exclusive, a