Role of structure and capacity for energy absorption in increasing the strength and crack resistance of refractory ceramics

Conclusions We identified the influence of the parameters of a heterogeneous structure and also of particles possessing the capacity to absorb energy of deformation on the strength _rup and the crack resistance K_lc of refractory ceramics. The proposed relationships facilitate quantitative evaluation of the influence of these factors and indicate ways of increasing the levels of _rup and K_lc. Comparison of the calculated and experimental values of _rup and K_lc obtained from tests of various types of ceramics indicate the suitability of the equations for assessing the characteristics of strength and crack resistance.Translated from Ogneupory, No. 7, pp. 8–13, July, 1987.