IN SITU PRODUCTION OF SILICON CARBIDE REINFORCED CERAMIC COMPOSITES

摘要

A method of producing ceramic composites of Al2O3 reinforced by shaped SiC particles preferably shaped as fine particles (random), platelets, whiskers of fibres by in situ production of SiC particles by heating a mixture of carbon particles of the desired shape with silicates of Al2O3 to a temperature above 1500 DEG C, convert the silicates and carbon to Al2O3 and SiC to produce in situ SiC particles of the desired shape and provide a ceramic powder that may be densified by techniques such as hot pressing, isostatic pressing or sintering.