COOL STORING MATERIAL OF OXIDE CERAMICS AND ITS MANUFACTURING METHOD

COOL STORING MATERIAL OF OXIDE CERAMICS AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide a cool storing material consisting of oxide ceramics having large specific heat at liquid helium temperature or lower and enhanced in refrig erating capacity at very low temperature, and a method for manufacturing the cool storing material consisting of oxide ceramic...

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Hauptverfasser: NOZAWA TOSHITERU, YANAGIYA TAKAKIMI, USHIO MORITERU
Format: Patent
Sprache:eng
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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creator NOZAWA TOSHITERU
YANAGIYA TAKAKIMI
USHIO MORITERU
description PROBLEM TO BE SOLVED: To provide a cool storing material consisting of oxide ceramics having large specific heat at liquid helium temperature or lower and enhanced in refrig erating capacity at very low temperature, and a method for manufacturing the cool storing material consisting of oxide ceramics. SOLUTION: This cool storing material is a bead-shaped polycrystalline sintered compact obtained by compacting and sintering the multiple oxide RXAl2-XO3 (wherein R is a rare earth element) of a rare earth metal and aluminum slightly excessive in aluminum content. The main structure in the bed of the cool storing material is RAlO3 of perovskite-state. Alumina and garnet are uniformly dispersed in the structure of perovskite.
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subjects ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
title COOL STORING MATERIAL OF OXIDE CERAMICS AND ITS MANUFACTURING METHOD
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