Importance

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Abstract

A ceramic material is prepared which has a favorable combination of high density, and elevated modulus of elasticity and thermal shock resistance as measured by the ability to withstand temperature changes of at least 300.degree. C. The ceramic material is prepared by subjecting a ceramic structure to at least one heat treatment providing the formation in the structure of controlled macro- and micro-cracks, and subjecting the structure processed in this fashion to further heating under static pressure to form the final ceramic material having the favorable combination of properties enumerated herein. The invention extends to the material, the method of its preparation and to a variety of products having predetermined properties that can be fabricated therefrom. For example, cylinder inserts for the manufacture of internal combustion engines, and packaging for integrated circuit devices may be prepared from the present ceramic material.

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First Claim