PRODUCTION OF HIGH STRENGTH SIC SINTERED BODY

PURPOSE:To obtain a high strength SiC sintered body nearly free from voids by granulating and molding SiC powder having a specified particle size and a specified ratio of the major axis size to the minor axis size, sintering the molded body and impregnating Si into the sintered body. CONSTITUTION:Si...

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Hauptverfasser:	MATSUO HIDEYASU, NOZAWA TATSUO
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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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a high strength SiC sintered body nearly free from voids by granulating and molding SiC powder having a specified particle size and a specified ratio of the major axis size to the minor axis size, sintering the molded body and impregnating Si into the sintered body. CONSTITUTION:SiC powder having 10-250mum particle size and 1.0-1.2 ratio of the major axis size to the minor axis size is granulated. The granulated powder is compacted in a mold or the like and sintered in an inert gaseous atmosphere or the like. The sintered body and Si powder are put in a quartz glass vessel or the like and Si is impregnated into the sintered body. The pref. particle size of the granulated SiC powder as starting material is