1Государственный научно-технический центр по ядерной и радиационной безопасности
2Национальный научный центр «Харьковский физико-технический институт»

Activation energies of all constituents of pore space (big (40 - 50 nm), middle (25 - 35 nm) and small (15 - 20 nm) pore channels and closed pores) in temperature inter-vals of less active (800 - 950 С) and intensive (950 - 1150 С) sintering of specimens of tetragonal zirconia, which were produced from amorphous powder, were defined. Volume decreasing of specimens in temperature interval of less active sintering de-pends on the volume reduction of small pore channels and closed pores, and in tem-perature interval of intensive sintering  in an equal degree on the volume reduction of all constituents of pore space.

Цель работы  исследование поведения открытых поровых каналов и закры-тых пор, как составляющих порового пространства, при спекании образцов тет-рагонального оксида циркония, сформированных из аморфных порошков/

1ФГУП научно-исследовательский институт синтетического каучука им. акад. С.В. Лебедева
2Институт высокомолекулярных соединений Российской Академии Наук

FSUE Lebedev Research Institute of Synthetic Rubber
Institute of Macromolecular Compounds, Russian Academy of Sciences

This article is concerned with magnetic fluids rheological features study; these fluids are based on fluorinated and siloxane rubbers. The speciality of fluids under consideration is in using of stabilized iron nanopowders as fillers. The iron nanoparticle surface is modified with fluorinated precursors by means of formed Fe-S-C covalent bond. Polyfluorinated shell provides the protection from agglomeration and oxidation. The advantages of such nanoparticles consist in inclusion them into the different polymeric matrixes while using this method. In the given research were used stated below polymeric matrixes: SKTN-G, Siloprene U-5, perfluorinated unsatured ether oligomers (E-100). The magnetic fluid efficiency was specified as an complex viscosity increasing effect at the ultimate values of magnetic flux density. The results of the given research reveal that the obtained magnetorheological fluids reach values of references, the former is filled with modified nanoparticles for 10 mass percent. The increase in magnetic fluids efficiency by 15-20 times is observed with rising of concentration.

Данная работа посвящена исследованию реологических характеристик магнитных жидкостей на основе фторированных и силоксановых каучуков. Особенностью рассматриваемых магнитных жидкостей является то, что в качестве наполнителя используются стабилизированные наноразмерные порошки железа.

1 Институт геологии Коми НЦ УрО РАН, г.Сыктывкар, Россия;
2 Институт Физики Высоких Давлений РАН, г.Троицк, Россия

1 Institute of geology Komi SC UB RAS, Syktyvkar, Russia
2 Institute for High Pressure Physics Russian Academy of Sciences, Troitsk, Russia

On a basis before established facts abnormal enrichment natural micropolycrystalline diamond units carbonic oxide spends experimental studying of a role fluid saturation diamondformation environments in formation of similar units at use as the catalyst of iron or it oxides at pressure 8.0 GPa and a range of temperatures 1400–1600 °С.

*Тбилисский гос.университет им. Ив.Джавахишвили
**Грузинский технический университет

In this paper results of researches divacancy in gallium arsenide, as the basic radiating defect at ionic implantation micro and nano structures, are given. This defect in gallium arsenide is responsible for strips IR absorption band - 1.0 and 0.8 eV and electrically active levels: Еv+0,52 eV and Еv+0,72 eV. In experiments were used polarized light and mono axial stress. It is shown, that in gallium arsenide after radiation the entered defects mainly mixed divacancy, which dipole moment is oriented close to crystallography direction <110> and they have atomic symmetry - <111>.

In this paper a low-temperature technique of production of the normal “on” (state of depletion) and normal “off” (state of enrichment) field-effect transistors with Shottky barrier (MESFET) on GaAs has been developed. Transistors were fabricated in a single technological cycle, on the same substrate, and W-Pt alloy was used for the gates formation. Pulsed photon treatment was carried out for the conductivity channels control.

In this paper the mechanism of pulse laser annealing of semiconductors is studied and the role of thermal and not thermal factors in these processes is estimated. It is experimentally shown and theoretically proved that the reason of low-temperature melting of a crystal by pulse laser annealing can be the electronic mechanism of weakening and isotropyzation of chemical bonds between its atoms. The critical concentration ncr. of antibonding quasi-particles (electrons in the conduction band and holes in the valence band ) at achievement, there should occur “melting of the semiconductor by the electronic mechanism”.

Целью настоящей работы является анализ влияния легирующих добавок на адсорбционные свойства материалов данного состава с точки зрения термодинамики.

Технологический институт Южного Федерального университета в г. Таганроге

In this paper the experimental results to synthesis of gas-sensitive thin films of γ-Fe2O3 is being described. Nanoscale samples of γ-Fe2O3 powder was synthesized and tested. A mechanism of particles stabilization through simultaneous film forming was proposed. A semiconducting nature of synthesized material was determined. The main physical and chemical features of gas-sensitive material was examined. An acetone vapour sensitivity of the material was examined.

В настоящей работе методом химического синтеза гидратированного оксида железа (III) и последующим отжигом при температуре 250 0С были получены порошкообразные образцы оксида железа. Образцы обладают цветом и магнитными свойствами характерные для γ-Fe2O3.

The purpose of the given work was revealing the influence of formation of structure of the nanosized materials on its gas-sensing characteristics. Results of research of samples of Cu-containing polyacrylonitrile films (PAN) received by sol-gel method with use of two methods of activation of polymer are presented. The morphology of the samples surface by method of appearing through electron microscopy (AEМ) is investigated. Process of formation of material structure from position of the theory of self-organizing is considered. Electroconductive properties of the received samples are studied. Gas-sensing characteristics of the investigated materials are defined.

Целью данной работы являлось выявление влияния формирования структуры наноразмерных материалов на их газочувствительные характеристики.
Для достижения цели при проведении научного исследования использовали золь-гель метод для формирования пленочных образцов. Процесс формирования структуры материала рассмотрен с позиций теории самоорганизации.

TiN coatings deposited from the vacuum-arc plasma source with rectilinear macroparticle filter were investigated. Influence of the amplitude of pulsed substrate potential in the range of 02500 V on the hardness and structure of the coatings was studied. The texture was shown to be the most sensitive, related to pulses amplitude, characteristic of the coating structure. The preferred orientation of the crystallites changes from that with the (111) plane parallel to the coatings surface in case when substrate potential is “floating” onto the (220) one when the high voltage potential pulses are applied to the substrate. Despite of the structure alteration, the coatings hardness keeps stable enough in the range of 3035 GPa.

In this work we present the result of investigation on adhesion of nanocrystalline diamond (NCD) films. It was shown, that durability to exfoliation of (NCD) films decrease with increasing of nucleation density. The basic source of origination of stresses between Mo substrate and NCD film is thermal stresses because of difference of their expansion coefficients. Differences in durability to exfoliation of NCD films are explained by various level of stress ralaxation between substrate and NCD films due to plastic strain in local areas between primary nuclei.

In this paper the defect formation via capture of macroparticles during titanium ni-tride coatings synthesis by means of vacuum- arc deposition has been investigated. The “ Immurement” of macroparticles into the bulk of coatings during its synthesis leads to formation of new specific structure defect within solids – voids, which contain metal particles. Decrease of metallic titanium capture by means of any technologies methods is effective method for increasing the hardness of vacuum- arc binary coatings on the base of non- stochiometrical cubic titanium nitride.

1Донецкий физико-технический институт им. А.А. Галкина НАН Украины
2Донецкий национальный университет

One of the important factors for the development of modern technology is to obtain nanopowders with a highly developed surface and a given functional surfaces. We used and developed methods of surface modification nanopowder systems SH-, NH2- and CH3-groups. We studied the effect of surface functional groups on the characteristics of the synthesized nanopowder systems. It was shown that the nature of the functional groups of modifiers gives specific chemical properties to material, and also exerts influence on the structural, morphological and magnetic characteristics of the systems.

It was studied regularity of surface nanoparticles formation under the influence of physical influence complex – pressure and temperature used on two consecutive forming stage of oxide system – amorphous xerogel and crystalline oxide. It was considered the competition of this two energetic processes influence.

A high-speed measuring and computing PC-controlled complex has been created, and its application in registration of cyclic voltage-current characteristics (CVCC) has been tested. Synthesis of two-dimensional membranes, nano-sized by the third microscopic coordinate, from fragments of mouse serum antibodies (MSA) has been performed on the surface of indifferent metal electrodes. All measured CVCCs from the Pt/x NANO IM MSA/PBS interface, where x is a number of antibody monomolecular layers applied on the Pt substrate, have been shown to be located inside CVCCs from Pt/PBS interface.