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 Найдено в других БД:Каталог книг и продолжающихся изданий (47)Каталог препринтов УрО РАН (1975 г. - ) (1)Нанотехнологии (11)Труды Института высокотемпературной электрохимии УрО РАН (48)Труды сотрудников Института органического синтеза УрО РАН (51)Труды сотрудников Института теплофизики УрО РАН (36)Расплавы (46)Публикации Черешнева В.А. (1)Публикации Чарушина В.Н. (13)Каталог библиотеки ИЭРиЖ УрО РАН (6)
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Общее количество найденных документов : 88
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1.
Инвентарный номер: нет.
   
   A 90


   
    Atomic structure and ionic conductivity of glassy materials based on silver sulfide / N. V. Melnikova, K. V. Kurochka, O. L. Kheifets, Y. Y. Volkova, N. I. Kadyrova // Bulletin of the Russian Academy of Sciences: Physics. - 2015. - Vol. 79, № 6. - С. 719-722
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ИОННЫЕ ПРОВОДНИКИ -- НАНОТРУБКИ -- ПРОВОДИМОСТЬ
Аннотация: The effect of the composition of glassy ionic conductors AgGe1 + x As1–x S3 and the composites based on these materials containing single-walled carbon nanotubes (CNT) AgGe1+x As1–x (S + CNT)3, on the atomic structure and ionic conductivity is analyzed.

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2.
Инвентарный номер: нет.
   


    Nikolaenko, I. V.
    Combined Method for Obtaining Ultradispersed / I. V. Nikolaenko, A. E. Krasovskaya, G. P. Shveikin // Russian Journal of Applied Chemistry. - 2015. - Vol. 88, № 1. - P35-39. - Bibliogr. : p. 39 (9 ref.)
Кл.слова (ненормированные):
ВАНАДИЙ -- ФАЗОВЫЙ СОСТАВ -- ПОРОШКИ -- УГЛЕРОД
Аннотация: New opportunity to synthesize nano- and ultradispersed powdered materials by combining of two procedures, classical liquid-phase precipitation and low-temperature microwave calcination, at a rather simple instrumentation is described. It was found in precipitation of precursors that, pending on the synthesis conditions (solution pH, amount of carbon, synthesis on the vessel surface or in the solution bulk), particles of hydrated vanadium oxide have different morphologies. It was also found that precursor powders have an insignifi cant microporosity, which is reserved in the fi nal products in trace amounts upon thermal treatment of samples. Intermediate and fi nal vanadium products were synthesized in an electromagnetic fi eld in a fl ow of argon, their phase composition and structure were examined in the stages of thermolysis, reduction, and arbidization, and their lattice constants were calculated. The morphology, size, and particle size distribution in the samples under study were determined.

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3.
Инвентарный номер: нет.
   
   F 56


   
    First-principles study of Mn, Al and C distribution and their effect on stacking fault energies in fcc Fe / N. I. Medvedeva, M. S. Park, D. C. Van Aken, J. E. Medvedeva // Journal of Alloys and Compounds. - 2014. - Vol. 582. - P475-482.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СПЛАВЫ ЖЕЛЕЗОСОДЕРЖАЩИЕ -- ДЕФЕКТЫ -- ДЕФЕКТЫ СТРУКТУРНЫЕ
Аннотация: Using ab initio simulation of manganese, aluminum and carbon impurities in fcc Fe, we demonstrated the features in their distribution, which involves repulsion of interstitial carbon atoms, formation of Mn–C pairs as well as short range Al-ordering of the D03-type. We modeled the formation of stacking faults (SF) and analyzed the impurity effect on the intrinsic stacking fault energy (SFE), which controls the plasticity mechanism in austenitic alloys. First, we found that impurities have an influence on the SFE only when they are located within a few atomic layers near a stacking fault. As a result, the SFE is highly sensitive to the concentration of impurities in the vicinity of stacking fault defect. Aluminum and carbon as well as manganese for concentrations higher than 15 at.% increase the SFE, while the formation of Mn–C pairs and Al-ordering restrain the SFE growth. Short range Al-ordering strongly decreases the unstable stacking fault energy (USFE) making the formation of the stacking fault much easier, but does not affect the SFE that can explain the observed planar glide deformation before the occurrence of mechanical twinning regardless of the SFE.

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4.
Инвентарный номер: нет.
   
   L 81


   
    Lithium stoichiometry of solid electrolytes based on tetragonal Li7La3Zr2O12 / E. A. Il’ina, A. A. Raskovalov, P. Y. Shevelin, V. I. Voronin, I. F. Berger, N. A. Zhyravlev // Materials Research Bulletin. - 2014. - Vol. 53. - P32-37.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КЕРАМИКА -- ИМПЕДАНСНАЯ СПЕКТРОСКОПИЯ -- РАССЕЯНИЕ НЕЙТРОНОВ -- ИОННАЯ ПРОВОДИМОСТЬ
Аннотация: Samples of LixLa3Zr2O8.5+0.5x (x = 6, 7, 8, 9, 10) were synthesized with the citrate–nitrate method. Neutron diffraction studies have shown the presence of lithium carbonate impurities in the synthesized compounds. We propose a simple and effective method to determine the carbonate impurity content in the solid electrolytes. The technique is based on the measurement of the carbon dioxide volume produced from the interaction of the investigated material with acid. Determined in this way, the content of Li2CO3 in the synthesized electrolytes Li7La3Zr2O12, Li8La3Zr2O12.5 and Li9La3Zr2O13 are 1.32 ± 0.04, 1.95 ± 0.06 and 3.49 ± 0.10 wt.%, respectively. From the obtained data, the actual lithium content per formula unit of complex oxide was calculated for the synthesized compounds. The composition with x = 9 had the highest total conductivity, σ = 7.5 × 10−6 S cm−1, at room temperature. All the investigated electrolytes have an activation energy of approximately 50 kJ mol−1.

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5.
Инвентарный номер: нет.
   
   O-66


   
    Optical and photocatalytic properties of quasi-one-dimensional ZnO activated by carbon / O. I. Gyrdasova, V. N. Krasil'nikov, E. V. Shalaeva, I. V. Baklanova, M. A. Melkozerova, L. Y. Buldakova, M. Y. Yanchenko // Mendeleev Communications. - 2014. - Vol. 24, № 3. - P143-144
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СВОЙСТВА ОПТИЧЕСКИЕ -- УГЛЕРОД

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6.
Инвентарный номер: нет.
   
   Е 64


    Еняшин, А. Н.
    Стабильность, структурные, упругие и электронные свойства 3D(sp3)-аллотропов углерода по данным DFTB-расчетов = Stability, Structural, Elastic, and Electronic Properties of 3D(sp3) Carbon Allotropes from DFTB Calculations / А. Н. Еняшин, В. Г. Бамбуров, А. Л. Ивановский // Доклады Академии наук. - 2012. - Т. 442, № 1. - С. 63-66 : рис., табл., граф. - Библиогр.: с. 66 (14 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
АЛЛОТРОПЫ УГЛЕРОДА -- СИНТЕЗ УГЛЕРОДНЫХ МАТЕРИАЛОВ

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7.
Инвентарный номер: нет.
   
   K 93


    Kurlov, A. S.
    Vacuum sintering of WC–8 wt.% Co hardmetals from WC powders withdifferent dispersity / A. S. Kurlov, A. I. Gusev, A. A. Rempel // International Journal of Refractory Metals and Hard Materials. - 2011. - vol. 29, № 2. - P221-231 : il. - Bibliogr. : p. 231 (27 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МЕТАЛЛЫ ТВЕРДЫЕ -- КАРБИД ВОЛЬФРАМА -- ОБЖИГ -- МИКРОСТРУКТУРА
Аннотация: The effect of sintering temperature and particle size of tungsten carbide WC on phase composition, density and microstructure of hardmetals WC–8 wt.%Co has been studied using X-ray diffraction, scanning electron microscopy and density measurements. The sintering temperature has been varied in the range from 800 to 1600 °C. The coarse-grained WC powder with an average particle size of 6 мm, submicrocrystalline WC??powder with an average particle size of 150 nm and two nanocrystalline WC powders with average sizes of particles 60 and 20 nm produced by a plasma-chemical synthesis and high-energy ball milling, respectively, have been used for synthesis of hardmetals. It is established that ternary Co6W6C carbide phase is the first to form as a result of sintering of the starting powder mixture. At sintering temperature of 1100–1300 °C, this??phase reacts with carbon to form Co3W3C phase. A cubic solid solution of tungsten carbide in cobalt, в-Co(WC), is formed along with ternary carbide phases at sintering temperature above 1000 °C. Dependences ofdensity and microhardness of sintering hardmetals on sintering temperature are found. The use of nanocrystalline WC powders is shown to reduce the optimal sintering temperature of the WC–Co hardmetals by about 100 °C

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8.
Инвентарный номер: нет.
   
   S 81


    Ivanovskaya, V. V.
    Simulation of Novel Superhard Carbon Materials Based on Fullerenes and Nanotubes / V. V. Ivanovskaya, A. L. Ivanovskii // Journal of Superhard Materials. - 2010. - Vol. 32, № 2. - P67-87 : il. - Bibliogr. : p. 82-87 (143 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОДЕЛИРОВАНИЕ -- СВЕРХТВЕРДЫЕ МАТЕРИАЛЫ -- ФУЛЛЕРЕНЫ -- НАНОТРУБКИ
Аннотация: The state-of-the-art in theoretical research directed at the search for superhard materials based on carbon fullerenes and nanotubes has been briefly reviewed. The data available on elastic properties of the main groups of condensed phases that form due to the interaction of fullerenes or (and) nanotubes because of both weak (of the van der Waals type) bonds and polymerization to form strong covalent sp3 bonds have been considered. Models for new hypothetical carbon nanostructured materials (the so called autointercalated hyperdiamonds, covalently bonded lattices of nanotubes, tubular cubic crystals, etc.) are discussed, and elastic properties of them are considered as related to their atomic structure, special features of their electronic structure and chemical bond have been discussed. The problems of synthesis of these systems are briefly considered

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9.
Инвентарный номер: нет.
   
   B 17


    Bakhteeva, Yu. A.
    Gas-Sensing Properties of Nanostructured MxV2O5 (M = Na, K, Rb, Cs) Oxides / Yu. A. Bakhteeva, N. V. Podval'naya, V. L. Volkov // Inorganic Materials. - 2010. - Vol. 46, № 10. - P. 1112-1114 : il. - Bibliogr. : p. 1114 (7 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
НАНОСТРУКТУРИРОВАНННЫЕ ОКСИДЫ -- ОКСИД ВАНАДИЯ -- ЩЕЛОЧНЫЕ МЕТАЛЛЫ -- ГАЗОСЕНСОРНЫЕ СВОЙСТВА
Аннотация: The gas-sensing properties of nanostructured vanadium oxide doped with alkali-metal cations (MxV2O5 with M = Na, K, Rb, and Cs) have been studied by measuring the resistance of films as a function of analyte content using an impedance meter. The results show that the doped vanadium oxide is sensitive to hydrogen, carbon monoxide, and ammonia in the concentration ranges 0.1–80, 0.1–5, and 0.1–5 vol %, respectively. The strongest gas response is offered by Rb0.47V2O5, which is due to the smallest interlayer spacing in the structure of this nanomaterial and to its larger specific surface area

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10.
Инвентарный номер: нет.
   
   E 43


   
    Electronic Structure and the Optical and Photocatalytic Properties of Anatase Doped with Vanadium and Carbon / V. M. Zainullina, V. P. Zhukov, V. N. Krasil'nikov, M. Yu. Yanchenko, L. Yu. Buldakova, E. V. Polyakov // Physics of the Solid State. - 2010. - vol. 52, № 2. - P271-280 : il. - Bibliogr. : p. 279-280 (45 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
АНАТАЗ -- ВАНАДИЙ -- КАРБОН -- ФОТОКАТАЛИТИЧЕСКИЕ СВОЙСТВА -- ЭЛЕКТРОННАЯ СТРУКТУРА
Аннотация: The electronic structures of undoped anatase and anatase doped with carbon and vanadium have been calculated using the ab initio tight binding linear muffin tin orbital (TB-LMTO) method in the LSDA + U approximation. It has been shown that the doping of TiO2 leads to the formation of narrow bands of the C and V impurity states in the band gap. The calculations of the imaginary part of the dielectric function have made it possible to estimate the intensity of the optical absorption. It has been established that the doping with vanadium and carbon leads to optical absorption in the visible range and to an increase in the absorption in the ultraviolet range up to 4 eV. This should result in an increase in the photocatalytic activity on the surface of the doped anatase. The experimental determination of the photocatalytic activity of whiskers of the anatase doped with carbon and vanadium in the reaction of hydroquinone oxidation has confirmed the increase in the activity of the doped materials under exposure to ultraviolet, visible, and blue light. The phenomenon of dark catalysis in the anatase doped with carbon and vanadium has been interpreted within the concept of low-energy electronic excitations between the impurity levels of carbon

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