Litteris et Artibus
Permanent URI for this communityhttps://ena.lpnu.ua/handle/ntb/39474
Browse
4 results
Search Results
Item Kinetic regularities of interaction of sintered titanium with molecular nitrogen at atmospheric pressure(Lviv Polytechnic Publishing House, 2016) Shvachko, Khrystyna; Kovbasyuk, Taras; Karpenko Physico-Mechanical Institute of the NAS of Ukraine; Lviv Polytechnic National UniversityThe kinetics of gas nitriding of the sintered titanium at a temperature of 800 °C was investigated. Parameters of surface roughness and surface microhardness were evaluated.Item Structure and properties of dielectric coatings based on fusible glass-ceramic materials(Lviv Polytechnic Publishing House, 2016) Kovbasyuk, Taras; Klymko, Orest; Baziuk, Mychailo; Lviv Polytechnic National UniversityStructure and thermal properties of the dielectric coatings on the basis of glass-ceramic system PbO-ZnO-B2O3-SiO2-Al2O3-BaO (sealant) on a stainless steel substrate were studied. The advantages and disadvantages of these surface layers in comparison with dielectric surface layers applied according to the method of magnetron sputtering are shown.Item Tribotechnical characteristics of VT22 titanium alloy after nitriding, combined with heat treatment(Lviv Polytechnic Publishing House, 2016) Lavrys, Serhii; Kovbasyuk, Taras; Penkovyi, Oleh; Karpenko Physico-Mechanical Institute of the NAS of Ukraine; Lviv Polytechnic National UniversityNitriding of VT22 titanium alloy, combined with its standard heat treatment in a single technological cycle was proposed. It was shown that after thermodiffusion saturation the microhardness and depth of the hardened surface layer of VT22 alloy increased, but the quality machined surface worsened. It was established that the increase time of nitriding process worsened the tribotechnical characteristics of friction pair nitrided VT22 alloy – BrAZhN 10-4-4 bronze.Item Thermo-kinetic properties of the new materials for functional layers of flat heating elements(Lviv Polytechnic Publishing House, 2015) Kovbasyuk, Taras; Shapran, Yuliia; Lviv Polytechnic National UniversityThermokinetic properties of the dielectric coatings on the basis of glass-ceramic system PbO-ZnO-B2O3-SiO2-Al2O3 (Sytal-Tsement) on a stainless steel substrate were studied. The advantages and disadvantages in comparison with modern functional layers of flat heating elements were analyzed.