METHOD FOR STORING ALLOY POWDER CONTAINING RARE EARTH METAL

PURPOSE:To enable stable storage of alloy powder contg. rare earth metals over a long period of time by press-molding the alloy powder into a green compact having a specified density ratio (apparent density/true density). CONSTITUTION:Alloy powder contg. rare earth metals such as Nd, Dy, Sm, Y, La a...

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Bibliographische Detailangaben
1. Verfasser:	SHIOTANI KATSUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	PURPOSE:To enable stable storage of alloy powder contg. rare earth metals over a long period of time by press-molding the alloy powder into a green compact having a specified density ratio (apparent density/true density). CONSTITUTION:Alloy powder contg. rare earth metals such as Nd, Dy, Sm, Y, La and Ce and having such an average particle size as to enable passing through about 12 mesh (Tyler process) is press-molded into a green compact having 0.28-0.40 density ratio (apparent density/true density). This press molding is preferably carried out in an atmosphere of an inert gas such as argon or nitrogen or in vacuum so as to prevent deterioration such as oxidation during molding.