Search academic texts

Information × Registration Number 0214U000457, 0111U002404 , R & D reports Title Development of atomic spectrometric techniques and chemical analysis of the elemental and phase composition of inorganic powders and nanocomposite materials, mathematical modeling of physical and chemical processes in the analysis and synthesis of nanomaterials popup.stage_title Head Dubok Vitaly Andreevich, Registration Date 06-03-2014 Organization Frantzevich Insitute for Materials Science Problems of the Ukranian National Academy of Sciences popup.description2 In the work was refined Eyring formula for calculating of absolute reaction rates. It is shown that consistent adherence to the principles of quantum mechanics leads to the definition of frequency coefficient of the Heisenberg uncertainty principle for energy. On an example of calculating evaporation rate of a number of refractory metals the advantages of the formula was demonstrated. A mathematical model of the process of formation of condensate in electron - beam evaporation and condensation of binary metal systems was developed. The example of a Cu - Cr system show that under certain conditions arise in the system self-oscillating, that results in formation of layered structures with thick layers of a complex hierarchy. A comprehensive chemical analysis and studies were performed of physical - chemical properties of nanoscale particles of turbostratic BN, the methods for determining B, N, O in nanoscale powders BN, H and C in graphite nano BN, was developed. Method for calculating the area of nanoscale particles of turbostratic BN of graphite structure was elaborated. It was studied oxidation of carbon nanoforms in B4C. In the project were extended and refined computerized database of effective equilibrium constant of reactions of formation of ion clusters in the glow discharge plasma, was created atlas of molecular interferences. Parameters of a spark plasma and their influence on the intensity of spectral lines in analysis of aluminum alloys were calculated using mathematical model. Results of research put into the development process of new materials. Product Description popup.authors Гарбуз В.В. Дубок В.А. Кузьменко Л.М. Курочкін В.Д. Петрова В. Романенко О.М. Суворова Л. Шацьких С.К. popup.nrat_date 2020-04-02 Close