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Information × Registration Number 0209U002926, 0106U003134 , R & D reports Title Effects determining the physical and physicochemical properties of functional materials popup.stage_title Head Matsokin Vadim Pavlovich, Registration Date 21-04-2009 Organization Kharkov national university named after V.N. Karazin popup.description2 Objects of research: multiphase systems Cu-Ni-Sn, single crystals KCl and NaCl, polyethylenetherephthalate polymeric films. The purpose of work: to study laws kinetics reactionary diffusion and the phase formation on a surface to multiphase system Cu-Ni-Sn; to find out features of education{formation} ordered dislocation structures at high temperatures in single crystals KCl and NaCl and conditions of their stability; to establish kinetics an initial stage of etching of tracks of ions Ar in polyethylenetherephthalate films. Methods of research: metallography, optical and raster electronic microscopy, the x-ray microanalysis. Kinetics of lateral phase spreading along a free surface has been studied on cross-section of two layer samples (Cu25at%Ni)-Sn in a temperature range 160 - 200oC by the methods of optical and scanning electron microscopy (SEM), provided with X-ray microprobe analysis, and atomic force microscopy (AFM). Obtained results were compared with kinetics of phase propagation along the surface in binary system Cu-Sn. It was found that instead of two competitive phases Cu6Sn5 and Cu3Sn in binary Cu-Sn system, only (CuNi)6Sn5 intermetallic compound is formed and spreads along the surface in ternary (Cu25at%Ni)-Sn system. The rate of (CuNi)6Sn5 phase spreading is higher in comparison with that for Cu6Sn5 phase. From measured parabolic phase growth kinetics the surface diffusion characteristics were calculated for ternary system and compared with binary ones. Observed accelerating effect of substitutive Ni component is explained in terms of higher disordering, caused by substitutive Ni atoms in growing ternary phase, in comparison with binary one. Anisotropy of high-temperature creep of single crystals with a lattice type of NaCl is found out and analysed. Changes in diameter and depths of pores were studied in the process of etching polyethyleneterephthalate films irradiated with Ar ions having the energy of 1 MeV/nucl. Information about the pore diameters and lengths was obtained with electronmicroscopy methods. 2N solution of NaOH were used as etchants. Two methods of sensibilization were used: the first one by UV illumination and treating in dimethylformamide, the second methods just by UV illumination. It was found that diameters and depths of pores are larger in films treated according to the first sensibilization methods. The track etch rate grows quicker than the transverse etch rate. This gives a possibility to obtain through pores wit diameters ranging from 50nm to several micrometers. Product Description popup.authors popup.nrat_date 2020-04-02 Close