METHOD FOR MANUFACTURING DEFATTED MOLDED BODY OF CERAMIC

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PROBLEM TO BE SOLVED : To provide a manufacturing method of a defatted molded body suppressing crack generation or breakage in a process till a final product and enhance yield of the final product in a defatted molded body of ceramic including terbium.SOLUTION : There is provided a manufacturing method of a defatted molded body of ceramic including at least a process for heating a ceramic molded body containing at least terbium oxide particles or terbium-containing composite oxide particles and an organic additive under atmosphere containing oxygen of 18 to 100 mass% at a defatting temperature of 450 to 1000°C and removing the organic additive to prepare a defatted molded body, a process for cooling the defatted molded body after decreasing oxygen concentration to 1.0 mass% or less by introducing inert gas to the atmosphere containing oxygen, the terbium-containing composite oxide particles are composite oxygen particles containing at least one or more kinds of rare earth elements selected from the group consisting of lanthanoid elements excluding terbium, and scandium and yttrium in addition to terbium particles.SELECTED DRAWING : NoneCOPYRIGHT : (C)2017, JPO&INPIT