Search academic texts

Information × Registration Number 0209U001304, 0106U000813 , R & D reports Title Physical aspects of crystallization of amorphous and nanocrystalline alloys under rapid cooling conditions popup.stage_title Head Bashev Valeryi Fedorovich, Registration Date 28-01-2009 Organization Oles Honchar Dnipropetrovsk national university popup.description2 The subjects of the research are quenched with liquid and vapor alloys of metal-metalloid systems, and immiscible metal - metal, ferromagnetic-diamagnetic systems.The purpose of the work is to establish the influence of the methods and of the formation conditions on the structure and phase formation in alloys during rapid crystallization and to research physical properties of rapidly quenched amorphous and nanocrystal materials; computer modeling of crystallization processes by the molecular dynamics method, and by the Monte Carlo method. Research methods - electronic microscopy, X-ray diffraction, metallographic and magnetometric methods, plotting of polyterms of electroresistance. As a result of investigations technological conditions of films sputtering and microwire (MW) moulding have been optimized. Nanocrystalline and amorphous samples of immiscible systems and systems on the basis of carbon and refractory metals with the increased values of coercive forces, temperature factor of resistance andsuperficial electroresistance have been obtained. Features of structure formation in subsurface layers of metal-metalloid alloys during nonequilibrium crystallization as a result of laser processing have been studied. The model of influence of glass covering on change of physical properties of MW has been worked out. Programs for computer simulations of crystallization processes have been worked out. Novelty of results of researches consists in creation of perspective non-equilibrium quenched materials for modern and future science intensive technologies in radio instrument-making industry, technology of SHF, mechanical engineering. Results of researches can be used at the enterprises of the radio-electronic and microelectronic industry. Product Description popup.authors popup.nrat_date 2020-04-02 Close