Перегляд за Автор "Bragina, L. L."
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Документ Analysis of the baсor refractories after their service in glass furnace(Національний університет "Львівська політехніка", 2016) Yaitskiy, Serhiy; Bragina, L. L.; Sobol, YuliyaThe degree of the baddeleyite-corundum refractories erosion depending on the areas of their location in the glass-making furnace in the float glass production was established. With the use of petrographic analysis the influence of chemical and mineral composition and also temperature and gas environment on corrosion of bacor linings was studied. Due to obtained results the recommendations in relation to the increase of glass-attack resistance of the furnace and its service life length were formulated.Документ Antibacterial glass-composite coatings for protection of special purpose steel panels(2011) Savvova, Oksana; Bragina, L. L.; Babich, ElenaIt has been established that the most informative and universal method for determination of biocide properties of vitreous coatings is qualitative method that takes into account the growth level of biotest microorganisms inoculated into liquid nutrient media. It is shown, that biocidity of glass-composite coatings on the basis of glasses of Na₂O–K₂O–CaO–ZrO₂–TiO₂–Al₂O₃–P₂O₅–B₂O₃–SiO₂ system is determined by the presence of calcium phosphates in them and depends on the type of bactericide filler. The most effective ones by the action on Pseudomonas aeruginosa bacterium and Aspergillus niger and Саndida albicans fungiare zinc titanate and Ag⁺, to Escherichia coli- only zinc phosphate.Документ Development of glass-ceramic high-strength material for personal armor protection elements(Національний університет "Львівська політехніка", 2017) Savvova, Oksana; Bragina, L. L.; Voronov, Gennadii; Sobol, Yuliya; Babich, Olena; Shadrina, Galina; Kuriakin, MykolaThe perspective of glass-ceramic high-strength materials used for personal armor elements has been established. The methodological approach has been developed and the choice of initial lithium aluminosilicate system for obtaining high-strength lightweight glassceramic materials has been substantiated. The glass formation area in the chosen system was studied, and model glasses were synthesized. Features of crystal structure formation during heat treatment of the developed model glasses were investigated. As a result, high-strength glass-ceramic materials have been developed. It has been determined that they possess high performance characteristics and can be used in manufacturing of modern composite armor.Документ Glass coatings on the basis of Na₂O-B₂O₃-SiO₂ system for tin bronze protection during melting(Lviv Polytechnic National University, 2015) Bragina, L. L.; Sobol, YuliyaRequirements to properties of protectivetechnological coatings for the tin bronze melting from secondary raw materials were formulated in the work. The choice of model glasses compositions in the initial Na₂O-B₂O₃-SiO₂ system on the basis of the melting parameters values was made. Non-scarce and inexpensive raw materials for protective coatings were selected. Also the best glass composition was determined based on the complex of chosen properties. The formation mechanism of the selected composition glassy melting by using DTА and XRDА was studied.Документ Powder electrostatic enamelling of household appliances(2011) Bragina, L. L.; Shalygina, Oksana; Kuryakin, N. A.; Annenkov, V. Z.; Guzenko, N. M.; Kupriyanenko, K.; Hudyakov, V.; Landik, A.Principles and practices of contemporary resource and energy saving technology of powder electrostatic application (POESTA) of vitreous enamel coatings are described. Its technological, economic and ecological advantages over slip enamelling in household appliances manufacture are discussed. We develop the principles of synthesis of special glass frits with high electric resistivity for POESTA and discuss the results of studies aimed at the development and industrial implementation of ground, direct-on and coloured cover enamels for household appliances and direct-on thermally resistant chemically durable coatings with antibacterial effect for protection of inner tanks of water heaters. Finally, we describe the development of compositions for easy-to-clean, catalytic and pyrolytic coatings.Документ Powder electrostatic technology of household appliances enamelling(Національний університет "Львівська політехніка", 2012) Shalygina, Oksana; Bragina, L. L.; Kuryakin, MykolaBasics and distinctive features of contemporary resource and energy saving technology of powder electrostatic application (POESTA) of vitreous enamel coatings are described. Its technological, economic and ecological advantages over slip enamelling in household appliances manufacture, particularly in Ukraine, are discussed. Synthesis principles of special glass frits with high specific electric resistivity for POESTA and results of investigation concerning development and industrial implementation of ground, direct-on and coloured cover enamels for household appliances are given. Development of compositions for obtaining of easy-to-clean, catalytic and pyrolytic coatings is described.Документ Research of solubility of biocompatible calciumsilicophosphate glass materials in physiological media(Твердохліб В. В., 2011) Babich, O. V.; Savvova, O. V.; Bragina, L. L.Документ Vitreous enamels for easy-to-clean and catalytic coatings(The Institute of Materials, Minerals and Mining, 2015) Bragina, L. L.; Shalygina, O. V.; Kuryakin, N. A.; Guzenko, N. M.; Hudiakov, V. I.; Annenkov, V. Z.