Makarenko V. Teploelektrotsentrali material and articles thereof with increased resistance to the flow of ionized gas

Object of the research: physicochemical processes of formation of the reinforced structure of heat and electrical insulating material with the participation of binders, fibers, dispersed oxide powders in the preparation of laboratory samples of heat and electrical insulating materials, experimental and industrial products. The purpose of the study was to develop a composite material with predetermined properties for manufacturing products of complex configuration that are stable in ionized gas streams. Research methods and equipment: thermodynamic, X-ray diffraction, differential thermal, IR spectroscopy, petrography, electron microscopy. Physical-mechanical and technical properties were determined in accordance with GOST and international ISO standards. The processing of experimental data was carried out using mathematical statistics. Theoretical and practical results: scientific principles have been developed and experimental data have been obtained on the development of compositions and on the development of a technology for manufacturing articles of complex configuration with increased resistance in the flows of ionized gases. The technical documentation has been designed for the production of a pilot batch of heat-and-electric insulating material. Novelty: regularities have been established and the features of the use of silicon alkoxide, which is a supplier of amorphous SiO2, have been established, which makes it possible to lower the sintering temperature of the mass, intensifies the formation of mullite, which, by reinforcing the corundum matrix, increases the heat resistance and fracture toughness of the composite material. Degree of implementation: based on the heat-and-electric insulating material developed, a batch of products of a complex configuration with predetermined properties was manufactured, which was tested at the production and commercial company "Fast Cut Factory" (Kharkiv sity). Theoretical results are introduced into the educational process of the Chair of Technology of Ceramics, Refractories, Glass and Enamels of NTU "KhPI" when preparing students for the specialty 05130104 - "Chemical Technologies of Refractory Non-Metallic and Silicate Materials". Scope of application: The developed technology can be used to create structural units of aviation equipment that operate under hard operating conditions, in the engineering industry as an abrasive material. It is expedient to use the results of studies in higher educational institutions when training specialists in the technology of refractory non-metallic and silicate materials.