Alumina-silicon carbide refractories and their method of manufacture
AssigneeShinagawa Refractories Co., Ltd.
InventorsTakeshi Hayashi, Masao Shibuno
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Abstract
Alumina-silicon carbide refractory characterized by comprising predominantly an inter growth texture. The alumina-silicon carbide is manufactured by adding fine aluminum powder to a body of silica-alumina type refractory compound, mixing, molding and drying the resultant mixture to obtain a green body and finally firing the green body in an atmosphere containing predominantly a carbon oxide gas.
Claims13
A process for manufacturing alumina-silicon carbide type refractories having a bonding structure which comprises mixing a silica-alumina type refractory material with a metallic aluminum powder, molding the mixture, drying the molded mixture, and then firing it in an atmosphere containing predominantly a carbon oxide gas, whereby the silica contained in the silica-alumina refractory material is reduced with the metallic aluminum powder to form metallic silicon and simultaneously corundum and also said metallic silicon is carbonized with the carbon oxide gas to form silicon carbide, so that an inter growth texture comprising corundum and silicon carbide is formed in a portion of the bonding structure of the refractories.
Dependencies are inferred from the claim text.