Method of forming yttria-gadolinia ceramic scintillator using hydroxide coprecipitation step

A simplified method of forming polycrystalline translucent-to-transparent yttria-gadolinia composition scintillators comprises forming an aqueous suspension of hydroxide coprecipitates of the yttria-gadolinia composition, and converting the hydroxides to oxalates. The oxalates are neutralized by was...

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Bibliographische Detailangaben
Hauptverfasser:	DOLE, STEPHEN LEE, VENKATARAMANI, SUBRAMANIAM (NMN)
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS CONCRETE DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION INORGANIC CHEMISTRY LIME, MAGNESIA MEASUREMENT OF NUCLEAR OR X-RADIATION MEASURING MEDICAL OR VETERINARY SCIENCE METALLURGY PHYSICS REFRACTORIES SLAG SURGERY TESTING TREATMENT OF NATURAL STONE
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Zusammenfassung:	A simplified method of forming polycrystalline translucent-to-transparent yttria-gadolinia composition scintillators comprises forming an aqueous suspension of hydroxide coprecipitates of the yttria-gadolinia composition, and converting the hydroxides to oxalates. The oxalates are neutralized by washing, dried, and granulated to form a finely dispersed oxalate powder. The oxalate powder is calcined, cold pressed to form a compact, and sintered in a reducing atmosphere or vacuum to form the polycrystalline translucent-to-transparent yttria-gadolinia composition scintillator.