INVESTIGATION OF THE INFLUENCE OF MECHANICAL PROPERTIES ON THE ARMOR RESISTANCE OF SUBDOMAIN GLASS CRYSTALLINE MATERIALS

Abstract

Promising methods for producing high-strength glass-ceramic materials based on lithium aluminum silicate glasses using ceramic technology are determined. The analysis of developments to strengthen glass-crystal materials with spodumene content is carried out. Composite materials based on spodumene glass-crystalline materials modified with zirconia stabilized with yttrium oxide have been developed. It was established that aluminosilicate glasses are characterized by a process of volumetric fine crystallization of glass with the formation of β-spodumene crystals in an amount of 80 vol. %, respectively, in the conditions of low-temperature short-term two-stage heat treatment. It has been established that the provision of a tightly packed material structure is ensured by the presence of fractions of no more than 125 μm ≈ 70 vol. %, not more than 63 μm - 15 vol. %, not more than 25 μm - 15 vol. %. The influence of the structure of glass-crystalline materials on their mechanical properties is investigated and the main criteria for ensuring high crack resistance, impact resistance and armor resistance are established. A comparative assessment of the developed impact-resistant glass-crystalline material and the well-known armor protection element made it possible to establish the prospects of using glass as an armor element with operational properties at the level of world analogues. Important aspects of the effective implementation of the developed material is its reduced cost and weight compared to ceramic armored elements. Also, a significant decrease in density and an increase in crack resistance of the developed material with a partial replacement of the superhard ceramic armored element with glass-ceramic materials as an energy-destroying and crushing layer will make it possible to reduce weight and increase the armor survivability of the ceramics-ceramic-Kevlar system during shelling. This will increase the competitiveness of domestic protective armor elements on the world market.