University of Florida Research Foundation, Incorporated

Robert H Krabill

David E Clark

A method of repairing a defect in or joining fired or unfired ceramic bodies by using a paste composed of a wet undried metal oxide gel consisting of Al.sub.2 O.sub.3, SiO.sub.2, MgO, ZrO.sub.2, Y.sub.2 O.sub.3, and mixtures thereof and joining the paste. A reinforcement material consisting of SiC, C, SiO.sub.2, Al.sub.2 O.sub.3, ZrO.sub.2, Y.sub.2 O.sub.3, MgO and mixtures thereof may be included in the paste.

Method for joining of prefired or fired ceramics using sol gels

A method of repairing or joining a metal oxide, such as Al.sub.2 O.sub.3, containing ceramic bodies, fired or unfired by preparing a sol from a precursor of the metal oxide, mixing with a gelling agent, Al(NO.sub.3).sub.3, to form a paste, optionally adding a reinforcement of SiC particulate and heating at an elevated temperature, and a repair kit.

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Gainesville, FL, United States of America

Robert H Krabill