Rare earth oxysulfide cold storage medium and cold storing machine

A rare earth metal oxysulfide represented by a general formula R2O2S (R denotes one kind or two or more kinds of rare earth elements to be selected from a group of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, as wells as Y) is formed into spherical granules. The mean particle size of t...

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Bibliographische Detailangaben
1. Verfasser:	YANAGIYA TAKAKIMI,NOZAWA TOSHITERU,KAGAWA KATSUNORI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS BLASTING CHEMISTRY COMBINED HEATING AND REFRIGERATION SYSTEMS COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS ELECTRICITY FERROUS OR NON-FERROUS ALLOYS HEAT PUMP SYSTEMS HEATING INDUCTANCES INORGANIC CHEMISTRY LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MAGNETS MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING METALLURGY REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	A rare earth metal oxysulfide represented by a general formula R2O2S (R denotes one kind or two or more kinds of rare earth elements to be selected from a group of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, as wells as Y) is formed into spherical granules. The mean particle size of the granules is 0.05-1 mm and their relative density is 96 % or over. The granules are used as a regenerative material at the liquid helium temperature.