Analysis of the alumina ceramic strength

Using 50 dense and porous corundum materials with sintering additives as an example, the dependence of the material strength on the strength of interparticle contacts P, interlayer thickness h, particle size d, and the amount of additives is analyzed. A linear dependence of Р on d for porous materials and a quadratic dependence of Р on d 2 for dense materials is established. The dependence of h on d is linear in all cases. It is shown that the P index is more sensitive to the structural characteristics of the material than its strength. Tab. 2, ill. 1, bibliography: 17 titles.