Hard magnetic samarium-cobalt based material production involves disproportionation at a high hydrogen pressure

In hard magnetic material production by hydriding-disproportionation- desorption-recombination (HDDR) treatment of a Sm-Co alloy, disproportionation is effected at a high hydrogen pressure. A hard magnetic samarium-cobalt based material is produced by subjecting a Sm-Co alloy to a hydriding-dispropo...

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Hauptverfasser:	HARRIS, IVOR REX, , BIRMINGHAM, GB, GUTFLEISCH, OLIVER., BIRMINGHAM, GB, HANDSTEIN, AXEL., 01326 DRESDEN, DE, MUELLER, KARL-HARTMUT., 01187 DRESDEN, DE, GEBEL, BERNHARD, 01640 COSWIG, DE, SCHULTZ, LUDWIG, DR., 01474 SCHOENFELD-WEISIG, 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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Zusammenfassung:	In hard magnetic material production by hydriding-disproportionation- desorption-recombination (HDDR) treatment of a Sm-Co alloy, disproportionation is effected at a high hydrogen pressure. A hard magnetic samarium-cobalt based material is produced by subjecting a Sm-Co alloy to a hydriding-disproportionation- desorption-recombination treatment in which disproportionation is effected at above 0.5 MPa hydrogen pressure at 500-900 deg C. Preferred Alloy: The starting alloy has the composition SmxCo100-x or SmxCo100-x-a-b-cFeaCubZrc, where x = 10 to 30 exclusive, a = less than 45, b = less than 15 and c = less than 15.