FIELD: chemistry.
SUBSTANCE: ceramic element contains sintered base and layer, where the coefficient of thermal expansion (CTE) of the base is higher than that of the layer and the base exerts compression force on the layer. The method of making said ceramic element involves moulding the base and applying the layer on its surface, exposure to a thermal cycle and exerting the compression force of the base on the layer. A method of breaking a geological formation using the disclosed ceramic element is also disclosed.
EFFECT: high strength of the ceramic element.
41 cl, 4 tbl, 10 dwg
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