Riabinin S. Strengthened spodumene glass composite materials for multifunctional purposes

The thesis is devoted to the development of strengthened glass composite materials based on spodumene for technical purposes, in particular, for individual protection against high-speed dynamic loading and parts of electrical devices. Subject of research are the processes of structure and phase formation of glass-ceramic materials based on lithium aluminosilicate glasses, strengthening mechanisms, performance properties and technological parameters for obtaining of glass composite materials. Object of research is strengthened glass composite materials for technical purposes. Research methods. Determination of the physicochemical properties of glasses and the performance characteristics of glass-ceramic (GCM) and glass-composite materials (GCpM) was carried out using special and standard techniques, given in the corresponding chapter of the work. The relative dielectric constant and the loss-angle tangent at the frequencies of ultra-short waves were determined using a computer comparative analysis of the experimental and calculated frequency dependence of the standing wave ratio of the test sample. The physicochemical properties of the materials were determined in accordance with the requirements of the current regulatory documents for silicate materials. The research was carried out using the equipment of the Department of Technology of Ceramics, Refractories, Glass and Enamels of NTU «KhPI», Department of Applied Electrodynamics of V.N. Karazin Kharkiv National University, Scientific and Technological Complex «Institute of Single Crystals» of the National Academy of Sciences of Ukraine, JSC «UkrRI of Refractories» named after A.S. Berezhny (Kharkiv). Ballistic tests of test samples were carried out in the A0501 military unit (Chuguiv). Electrophysical tests of samples were carried out by UC "Gorelektrotransservice". As a result of the research on the topic of the dissertation work, the following scientific results were obtained: Compositions of reinforced glass-composite materials with high crack resistance based on β-memory of technical purpose have been developed and optimal technological parameters of their production have been determined, which provide formation of nano- and submicron volume-crystallized structure by spinodal phase separation mechanism in two-stage low-temperature processing.