The mechanical behavior of silicon nitride and zirconium dioxide ceramics is investigated in a wide temperature range. Much attention is paid to crack resistance under the conditions of the ambient. Data obtained by different methods used for evaluating crack resistance are analyzed, and it is shown that the best results have been obtained in tests in which the concentrator was an indentation of a Vickers pyramid. The analysis was conducted using fractographic investigations of the materials and data of tests of a model material of zirconium dioxide.
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Translated from Ogneupory, No. 1, pp. 21 – 26, January, 1996.
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Gogotsi, G.A., Galenko, V.I., Zavada, V.P. et al. Problem of evaluating the crack resistance in ceramics of Si3N4 and ZrO2 . Refractories 37, 21–26 (1996). https://doi.org/10.1007/BF02230459