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  1. No Access

    Article

    Comparative analysis of the structure and electrical properties of single crystal and ceramic (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 solid electrolyte

    Ceramics with the composition of (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 was obtained by tape casting onto a moving substrate using the original powder obtained by grinding single crystals. The phase composition, crysta...

    D. A. Agarkov, E. A. Agarkova, M. A. Borik… in Journal of Solid State Electrochemistry (2024)

  2. No Access

    Article

    Thermal conductivity of Y2O3-stabilized ZrO2 cubic single crystals: effects of defect structure

    Yttria-stabilized zirconia is one of the most widely used solid electrolyte materials for solid oxide fuel cells (SOFCs) as well as solid oxide electrolysis cells (SOECs). The crystalline, defect structure, an...

    D. A. Agarkov, M. A. Borik, D. S. Katrich… in Journal of Solid State Electrochemistry (2024)

  3. No Access

    Article

    Solid electrolytes based on zirconium dioxide partially stabilized with oxides of yttrium, gadolinium, and samarium

    The phase composition, structure, conductivity, crack resistance, and microhardness of crystals (ZrO2)1-x(R2O3)x, where R = Y, Gd, Sm, and (x = 0.03, 0.04, 0.05) were studied. Crystals were grown by directed crys...

    D. A. Agarkov, M. A. Borik, A. S. Chislov… in Journal of Solid State Electrochemistry (2024)

  4. No Access

    Article

    Effect of the Temperature-Rate Regimes in Electric Pulse Plasma Sintering on Microstructure and Mechanical Properties of Aluminum Oxide: The Role of Sintering Mechanisms

    The temperature and heating rate affecting the shrinkage kinetics are studied for cylindrical workpieces obtained from submicron and fine aluminum oxide powder. The studies involve the powder from three batche...

    M. S. Boldin, A. A. Popov, A. V. Nokhrin… in Inorganic Materials: Applied Research (2024)

  5. No Access

    Article

    Electropulse (Spark) Plasma Sintering of Ultrafine-Grained WC–Al2O3 Ceramics

    The sintering mechanisms of WC–Al2O3 nanopowder compositions with different contents of al-umina particles (1, 3, and 5 wt %) have been studied. The samples of WC–Al2O3 ceramics are obtained by electropulse (spar...

    E. A. Lantsev, A. V. Nokhrin, M. S. Boldin… in Inorganic Materials: Applied Research (2023)

  6. No Access

    Article

    Dynamic Strength of a Fine-Grained Alumina Ceramic Obtained by Spark Plasma Sintering

    Dynamic compressive tests of alumina samples with different grain sizes obtained by spark plasma sintering (SPS) of submicron- and micron-sized α-Al2O3 powders have been performed. The effect of heating rate (Vh)...

    N. V. Melekhin, M. S. Boldin, A. A. Popov… in Inorganic Materials: Applied Research (2023)

  7. No Access

    Article

    Preparation of Ultrafine-Grained WC–ZrO2 Ceramics by Spark Plasma Sintering

    WC–(1, 3, 5)% ZrO2 ceramics have been produced by spark plasma sintering (SPS). WC–ZrO2 powder mixtures have been prepared by ultrasonic homogenization and stirring of WC nanopowder and submicron t-ZrO2 powder. T...

    E. A. Lantsev, A. V. Nokhrin, M. S. Boldin, K. E. Smetanina… in Inorganic Materials (2023)

  8. No Access

    Article

    Microstructure of Ultrafine-Grained Al2O3–ZrO2 Ceramics Produced by Two-Step Spark Plasma Sintering

    We have studied the effect of monoclinic ZrO2 additions (1.5, 5, and 10 vol %) on the shrinkage kinetics of submicron α-Al2O3 powder. Ceramic samples were prepared by two-step spark plasma sintering (SPS). It has...

    M. S. Boldin, A. A. Popov, G. V. Shcherbak, A. A. Murashov… in Inorganic Materials (2022)

  9. No Access

    Article

    Interaction of Calcium and Strontium Carbonates with KF Solutions

    The conversion of powdery MCO3 (M = Ca or Sr) to the metal fluoride by reacting it with potassium fluoride in solution was studied. The chosen reaction conditions produce single-phase calcium fluoride and stronti...

    P. P. Fedorov, A. A. Luginina, N. Yu. Tabachkova… in Russian Journal of Inorganic Chemistry (2022)

  10. No Access

    Article

    Structure and Transport Characteristics of Single-Crystal and Ceramic ZrO2–Y2O3 Solid Electrolytes

    Directionally solidified single crystals of (ZrO2)1 – x(Y2O3)x solid solutions (x = 0.08–0.12) are grown. The effect of the concentration of the stabilizing yttrium oxide on the transport characteristics of the Z...

    E. E. Lomonova, D. A. Agarkov, M. A. Borik… in Russian Journal of Electrochemistry (2022)

  11. No Access

    Article

    Platinum nanoparticles supported on nitrogen-doped carbons as electrocatalysts for oxygen reduction reaction

    Behavior of Pt/C catalysts obtained by the platinum deposition on standard and nitrogen-doped carbon supports with different microstructure has been studied in the oxygen electroreduction reaction in an acidic...

    E. A. Moguchikh, K. O. Paperzh, A. A. Alekseenko… in Journal of Applied Electrochemistry (2022)

  12. No Access

    Article

    Influence of the Sn-Oxide-Carbon Carrier Composition on the Functional Characteristics of Deposited Platinum Electrocatalysts

    The effect of the SnO2 nanoparticles content on the structure and electrochemical behavior of Pt/(SnO2/C) catalysts containing about 20 wt% Pt was studied. In this case, SnO2/C nanostructured materials were obtai...

    I. N. Novomlinskiy, M. V. Danilenko, O. I. Safronenko… in Electrocatalysis (2021)

  13. No Access

    Article

    Phenomenon of Reversion after Aging in Magnesium Alloys with Gadolinium and Samarium

    The parameters of reversion after hardening aging of magnesium alloys containing two rare earth metals gadolinium (yttrium group) and samarium (cerium group) were determined at various ratios of their contents...

    L. L. Rokhlin, T. V. Dobatkina, N. Yu. Tabachkova… in Inorganic Materials: Applied Research (2021)

  14. No Access

    Article

    ZrO2–Sc2O3 Solid Electrolytes Doped with Yb2O3 or Y2O3

    The effects of the Y2O3 and Yb2O3 co-do** impurities on the transport characteristics and stabilization of the cubic phase in solid solutions based on ZrO2–Sc2O3 were compared. The crystals of the (ZrO2)0.99 –x

    E. E. Lomonova, D. A. Agarkov, M. A. Borik… in Russian Journal of Electrochemistry (2020)

  15. No Access

    Article

    Features of β-Phase Decay in Ti–22Nb–6Zr Alloy

    Abstract—A compact powder Ti–22Nb–6Zr alloy was obtained by powder metallurgy methods. The initial alloy powder was synthesized by the calcium hydride method. It was shown that, after consolidation during vacuum ...

    S. N. Yudin, A. V. Kasimtsev, N. Yu. Tabachkova… in Inorganic Materials: Applied Research (2019)

  16. No Access

    Article

    Structural, Mechanical, and Transport Properties of Scandia and Yttria Partially Stabilized Zirconia Crystals

    Crystals of (ZrO2)1 –x – y(Sc2O3)x(Y2O3)y (x = 0.003–0.045, y = 0.005–0.03) solid solutions have been grown by directional solidification in a cold crucible. All of the crystals consist of a mixture of two tetrag...

    E. A. Agarkova, M. A. Borik, A. V. Kulebyakin, I. E. Kuritsyna… in Inorganic Materials (2019)

  17. No Access

    Article

    Gold nanoparticles in reverse micellar solutions: preparation, optical properties, and dimensional characteristics

    Gold nanoparticles (NPs) were synthesized via chemical (Chem) and radiation-chemical (RadChem) methods for the reduction of ions in reverse micellar solutions (RMS). The gold NP have for the first time been obtai...

    A. A. Revina, K. F. Chernyshova, N. Yu. Tabachkova… in Russian Chemical Bulletin (2019)

  18. No Access

    Article

    Synthesis of PtCu/С Electrocatalysts with Different Structures and Study of Their Functional Characteristics

    PtCu/C electrocatalysts with similar compositions but different distributions of components in bimetallic nanoparticles were obtained by simultaneous and sequential reduction of copper(II) and platinum( IV) in...

    S. V. Belenov, V. E. Guterman, N. Yu. Tabachkova… in Russian Journal of Electrochemistry (2018)

  19. No Access

    Article

    Effect of the Composition and Structure of Pt(Cu)/C Electrocatalysts on Their Stability under Different Stress Test Conditions

    Stability is one of the most important characteristics of electrocatalysts used in low-temperature fuel cells with a proton exchange membrane. The corrosion-morphological stability of supported electrocatalyst...

    E. A. Moguchikh, A. A. Alekseenko, V. E. Guterman… in Russian Journal of Electrochemistry (2018)

  20. No Access

    Article

    Activity and Stability of Pt/C and Pt-Cu/C Electrocatalysts

    Stability in the course of exploitation and catalytic activity in reactions, taking place on the electrodes, are the most important characteristics of electrocatalysts that determine their application in fuel ...

    V. E. Guterman, S. V. Belenov, A. A. Alekseenko, Rui Lin… in Electrocatalysis (2018)

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