Topchiy V. High-strength glass-composite materials based on lithium disilicate for the protection of special machinery

The object of the research is the principless of structure and phase formation of high-strength glass-composition materials based on lithium silicate glasses, as well as strengthening mechanisms, operational properties and technological parameters for obtaining materials. The purpose of the research is to solve the scientific and practical problem of creating high-strength materials for the protection of special equipment and vehicles. Research methods - gamma-spectrometric, XRD-analysis, petrographic, IR-spectroscopy, electron-microscopic analysis, X-ray fluorescence analysis, electron probe microanalysis, spectrophotometric analysis. Theoretical and practical results − the compositions were developed and the optimal technological parameters for the production of high-strength glass-composition materials were determined, which are characterized by the formation of oriented sitalized structure due to directional crystallization by the phase separation mechanism in a two-stage short-term low-temperature heat treatment. Novelty − theoretically substantiated and experimentally established that the production of high-strength glass-composition materials, including optically transparent, for protection of special equipment under conditions of short-term low-temperature heat treatment based on lithium silicate glass-matrix, structurally stabilized by zirconium, phosphorous and boron using the formation of oriented nano- and submicron material structure with containing crystalline phases of lithium disilicate in the form of a dendrites which, along with glass phases provide necessary physical and chemical, technological and ballistic properties. Degree of implementation − the results of the thesis introduced in the educational process of the Department of technology of ceramics, refractories, glass and enamels NTU "KhPI". Scope of application − developed high-strength materials based on lithium silicate glasses, open the prospects for a comprehensive solution to the problem of domestic production of high-strength armor elements for protection of special equipment