Materials Literature
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Nanosized (10~50 nm) cathode material Li2MnO3 was prepared for with MnSO4·H2O，KMnO4 and Li-OH aqueous solution as the precursor via single-step hydrothermal reaction by controlling the reaction time, proportion of processor, and the reagent concentration. The prepared materials were well crystallized and exhibited a m…
We report a comparative study on microphase separation of a serial of block copolymers (BCPs) de-pending on some parameters such as solvent, annealing time. Toluene-Chlorobenzene mixtures show the best phase separation in comparison with other pristine or mixture of solvents. The results were optimized for large area…
In this report the approach is developed where the carbon nanotube – metallic nanoparticles composites are used as material of electrodes for electrochemical capacitors based on the double electric layer and pseudo-capacitance effect. To improve the pseudo-capacitance properties the ethanol as the auxiliary reagent is…
The transport of dissolved oxygen in the Czochralski silicon towards the arsenic-doped ultra-shallow junction was investigated. Ultra-shallow junction was formed by low-energy As+ ion implantation with the subsequent furnace annealing at 750 C-950 C temperatures for the dopant activation. Oxygen and arse-nic redistrib…
The work deals with low-temperature photoluminescence and deformation luminescence (mechanolu-minescence) of a composite material based on fine disperse powder of phosphor SrAl2O4:(Eu2+, Dy3+) and photopolymerizing resin that is transparent in the visible region. It has been shown that at the low tem-perature (T=15÷20…
Interface is the key region which determines, to a great extent, the set of properties of all heterogeneous systems, including composite materials. We reported interface healing of carbon fiber reinforced thermoplastic composite material via resistive heating. The carbon fiber, T700 carbon fiber, with a resistivity of…
Set-up for nanosized powder synthesis and set-up for deposition of composite and multilayer films were described. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35609
Using the method of X-ray analysis with the diffraction vectors in the plane and perpendicularly to the plane of growth of nanocrystalline W-Ti-B system condensates, regularities of forming the phase composition, structure and substructural characteristics were revealed. The designer’s software package «ScecDec» was e…
The results of research structural, phase state and strain properties of nanodimentional film systems based on Fe and Pt at deformation intervals l1 = (0 - 1)%, l2 = (0 - 2)% and l3 = (0 - 3)% are presented. After condensation in films occurred initiation disordered solid solution fcc-FePt with the mean value of…
The nano-structured Li[Li0.2Co0.4Mn0.4]O2 cathode material is synthesized by a co-precipitation method. X-ray diffraction shows that the synthesized material has a hexagonal α-NaFeO2 type structure with a space group R-3m. Scanning electron microscopy and transmission electron microscopy images show the homogeneous di…
Dependence of thermal conductivity of nanocrystalline diamond coating on grain size and form is theoretically investigated. Nanodiamond is considered as two-phase material composed of dielectric diamond grains characterizing by three main dimensions and segregated by thin graphite layers with electron or phonon therma…
Research results of influence of a uniform magnetic field by induction of 200 mT on the longitudinal gauge factor of nanocrystalline film systems of Ni / Ag / Ni with different thickness of non-magnetic layer of Ag within elastic deformation up to 1% are presented. The paper describes methods of forming three-layer st…
In this paper we have obtained expression for the contribution to DOS with the help of the method of the temperature Green functions. Multiple elastic electron scattering by impurities and structural inhomogeneities in graphene on a substrate, has been taken into account. The resulting expression for the contribution…
Polycrystalline, non-agglomerated nanopowders based on monosized (Y1-xEux)2O3 submicrospheres were prepared. It was shown that the annealing temperature strongly influences on the structure, mor-phology and composition of the spherical (Y1-xEux)2O3 phosphors obtained. It was found that the concentra-tion quenching eff…
Transmission electron microscopy (TEM) with electronic diffraction and X-ray diffraction (XRD) was used to study structural features of nanosized magnetite Fe3O4, which was synthesized using polymeric matrices (polysaccharide chitosan, at alias). From the received data it was revealed that growth inhibition and size s…
The study of the effect of ultrasonic shock treatment on the structure of Al-Mg-Si alloy surface showed that the initial structural state of the alloy significantly affected the mechanism of relaxation of internal stresses generated by shock-cyclic loading. The formation of orientation chaos observed in pre-homogenize…
Polyaniline polymers were prepared using ethanol as solution in this paper while a kind of copolymer was formed with o-toluidine. And then the products were characterized and analyzed by the tests of infra-red, electron microscopy and so on. The results shows that the products have the structure of nanorod, and the th…
Controlling the cell size and cell density of microcellular foams has an important influence on polymer-ic foams properties. By using nanoparticles in polymers and supercritical fluids as foaming agent, it is pos-sible to create microcellular foams with controlled morphology. In this article surface modified carbon na…
iarious protective coatings obtained by phosphating were examìned in order to establísh the interdependencè between the constitution of the coating'and such etectroóhemical properties as can-be related to corrosion resistance, in particular f ree corrosion potential and polarization resistance.Riassunto Gostituzione e…
Platinum catalysts of H2 activation with average size ≤2.0 nm were prepared in a base of reduction conversion of graphene oxide. A low few-layered carbon nanomaterial was prepared by thermoexpansion and annealing of graphene oxide. The uniformly dispersed Pt nanoparticles were supported on two-dimension graphene flat…