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  1. No Access

    Article

    Effect of the ZrO2-Based Solid Solution on the Low-Temperature Phase Stability of ZrO2−Y2O3−CeO2 Materials

    The low-temperature phase stability of 97 mol.% ZrO2–3 mol.% Y2O3, 95 mol.% ZrO2–3 mol.% Y2O3–2 mol.% CeO2, 92.5 mol.% ZrO2–2.5 mol.% Y2O3–5 mol.% CeO2, 90 mol.% ZrO2–2 mol.% Y2O3–8 mol.% CeO2, and 88 mol.% ZrO2–...

    I. O. Marek, O. V. Dudnik, S. A. Korniy… in Powder Metallurgy and Metal Ceramics (2023)

  2. No Access

    Article

    Electron-Beam and Plasma Oxidation-Resistant and Thermal-Barrier Coatings Deposited on Turbine Blades Using Cast and Powder Ni(Co)CrAlY(Si) Alloys Produced by Electron Beam Melting IV. Chemical and Phase Composition and Structure of Cocralysi Powder Alloys and Their Use

    A new technique for producing powders from the electron-beam CoCrAlYSi alloy (MZP-11 grade) is proposed. The method includes step-by-step grinding of the alloy employing a press and a two-roll vertical mill. T...

    I. M. Grechanyuk, M. I. Grechanyuk, G. A. Bagliuk… in Powder Metallurgy and Metal Ceramics (2022)

  3. No Access

    Article

    Composite Ceramics for Thermal-Barrier Coatings Produced from Zirconia Doped with Rare Earth Oxides

    The thermal fatigue life of zirconia-based complex composite ceramics doped with a mixture of rare earth oxides was studied. Two concentrates of rare earth oxides were chosen (wt.%): 1) cerium- subgroup concen...

    O. V. Dudnik, S. M. Lakiza, M. I. Grechanyuk… in Powder Metallurgy and Metal Ceramics (2022)

  4. No Access

    Article

    Electron-Beam and Plasma Oxidation-Resistant and Thermal-Barrier Coatings Deposited on Turbine Blades Using Cast and Powder Ni (Co)CrAlY (Si) Alloys Produced by Electron Beam Melting III. Formation, Structure, and Chemical and Phase Composition of Thermal-Barrier Ni(Co)CrAlY/ZrO2–Y2O3 Coatings Produced by Physical Vapor Deposition in One Process Cycle

    Physical and chemical vapor deposition methods are used to apply thermal-barrier coatings (TBCs) to turbine blades. Operations intended to form a diffusion barrier layer constitute an individual process. This ...

    M.I. Grechanyuk, I.M. Grechanyuk, Y.N. Yevterev… in Powder Metallurgy and Metal Ceramics (2022)

  5. No Access

    Article

    Changes in the Properties of Ultrafine Al2O3–ZrO2–Y2O3–CeO2 Powders After Heat Treatment in the Range 400–1450°C

    Ultrafine 90AZK, 80AZK, 70AZK, and 58.5AZK powders in the Al2O3–ZrO2–Y2O3–CeO2 system were produced for the first time by a combined method involving hydrothermal synthesis followed by mechanical mixing with α-Al

    M.Yu. Smyrnova-Zamkova, O.V. Dudnik, O.I. Bykov… in Powder Metallurgy and Metal Ceramics (2022)

  6. No Access

    Article

    Effect of Heat Treatment in the Temperature Range 400−1300°C on the Properties of Nanocrystalline ZrO2−Y2O3−CeO2 Powders

    The properties of nanocrystalline powders of compositions (mol.%) 97 ZrO2–Y2O3, 95 ZrO2–3 Y2O3–2 CeO2, 92.5 ZrO2–2.5 Y2O3–5 CeO2, 90 ZrO2–2 Y2O3–8 CeO2, and 88 ZrO2–12 CeO2 were studied. The powders were produced...

    I. O. Marek, O. V. Dudnik, S. A. Korniy… in Powder Metallurgy and Metal Ceramics (2021)

  7. No Access

    Article

    The Role of Hafnium in Modern Thermal Barrier Coatings

    The world’s experience in using hafnium in two important parts of high-temperature thermal barrier coatings, such as the top thermal barrier layer and bond coat layer, was analyzed. In the top thermal barrier ...

    S.M. Lakiza, M.I. Hrechanyuk, V.P. Red’ko… in Powder Metallurgy and Metal Ceramics (2021)

  8. No Access

    Article

    Composite Ceramics for Thermal Barrier Coatings Produced From ZrO2 Doped with Yttrium-Subgroup Rare-Earth Metal Oxides

    The use of compositionally complex ZrO2-based ceramics doped with a mixture of yttrium-subgroup rare-earth metal (REM) oxides for the deposition of thermal barrier coatings (TBCs) was studied. For research, a hea...

    O.V. Dudnik, S.M. Lakiza, I.M. Grechanyuk… in Powder Metallurgy and Metal Ceramics (2021)

  9. No Access

    Article

    High-Entropy Ceramics for Thermal Barrier Coatings Produced from ZrO2 Doped with Rare-Earth Metal Oxides

    Current studies of ceramic topcoat materials for thermal barrier coatings (TBCs) of next generation focus mainly on ternary, quaternary, and more complex oxide systems. The use of high-entropy ZrO2-based ceramics...

    O.V. Dudnik, S.M. Lakiza, I.M. Grechanyuk… in Powder Metallurgy and Metal Ceramics (2021)

  10. No Access

    Article

    Effect of Heat Treatment on the Structure and Phase Composition of the Nanosized Powder Based on a ZrO2 Solid Solution

    The nanosized 90 mol.% ZrO2–2 mol.% Y2O3–8 mol.% CeO2 powder was produced by hydrothermal synthesis in an alkaline environment and heat-treated in the range 400–1300°C. The powder properties were examined by X-ra...

    O.V. Dudnik, I.O. Marek, O.K. Ruban, V.P. Redko… in Powder Metallurgy and Metal Ceramics (2020)

  11. No Access

    Chapter and Conference Paper

    Development of a Web Application of Facilitate Multidisciplinary Rehabilitation of Children with Cleft Lip and Palate

    In recent months the priority area of modern medicine has become on-line informatization and computerization. The most promising development has been the use of information and computer support in an integrat...

    O. V. Dudnik, Ad. A. Mamedov… in Software Engineering Perspectives in Intel… (2020)

  12. No Access

    Article

    Physicochemical Properties of Hydrothermal Nanocrystalline ZrO2–Y2O3–CeO2 Powders

    Nanocrystalline powders in the ZrO2−Y2O3−CeO2 system were produced by hydrothermal synthesis in an alkaline environment. The powder properties were studied by differential thermal analysis, Xray diffraction, elec...

    I. O. Marek, O. K. Ruban, V. P. Redko… in Powder Metallurgy and Metal Ceramics (2019)

  13. No Access

    Article

    Thermal Barrier Coatings: Current Status, Search, and Analysis

    The principles for selecting materials to be used as thermal barrier coatings (TBCs) are presented. The advantages and disadvantages of new methods for TBC deposition are briefly described. After measurement o...

    S. M. Lakiza, M. I. Grechanyuk, O. K. Ruban… in Powder Metallurgy and Metal Ceramics (2018)

  14. No Access

    Article

    Isothermal Section of the Al2O3–TiO2–Gd2O3 Phase Diagram at 1400°C

    An isothermal section of the Al2O3–TiO2–Gd2O3 phase diagram is constructed at 1400°C. No new phases or appreciable solubility regions based on components or binary compounds are found in the system. Triangulation...

    Ya. S. Tishchenko, S. M. Lakiza, V. P. Red’ko… in Powder Metallurgy and Metal Ceramics (2017)

  15. No Access

    Article

    Isothermal Sections of the Al2O3–TiO2–Y2O3 Phase Diagram at 1550 and 1400°C

    The isothermal sections of the Al2O3–TiO2–Y2O3 phase diagram are constructed for the first time at 1550 and 1400°C. New phases or appreciable homogeneity ranges based on components and binary compounds are not fo...

    Ya. S. Tishchenko, S. M. Lakiza, V. P. Red’ko… in Powder Metallurgy and Metal Ceramics (2017)

  16. No Access

    Article

    The Sun and heliosphere explorer – the Interhelioprobe mission

    The Interhelioprobe mission aims to investigate the inner heliosphere and the Sun from close distances (up to 0.3 AU) and from out of the ecliptic plane (up to 30°). In this paper we present the relevance of t...

    V. D. Kuznetsov, L. M. Zelenyi, I. V. Zimovets, K. Anufreychik… in Geomagnetism and Aeronomy (2016)

  17. No Access

    Article

    ChemiX: a Bragg crystal spectrometer for the Interhelioprobe interplanetary mission

    Interhelioprobe (IHP), an analogue to the ESA Solar Orbiter, is the prospective Russian space solar observatory intended for in-situ and remote sensing investigations of the Sun and the i...

    M. Siarkowski, J. Sylwester, J. Bąkała, Ż. Szaforz, M. Kowaliński… in Experimental Astronomy (2016)

  18. No Access

    Article

    A detector on the basis of an activated p-terphenyl single crystal and a silicon photomultiplier

    The design of a compact detector on the basis of an activated p-terphenyl single crystal with signal registration using a silicon photomultiplier is described. The results of measurements of the detector characte...

    O. V. Dudnik, L. A. Andryushenko, V. A. Tarasov… in Instruments and Experimental Techniques (2015)

  19. No Access

    Article

    SIDRA instrument for measurements of particle fluxes at satellite altitudes. Laboratory prototype

    The design concept and first set of results are presented for electronic modules of a laboratory prototype of the small-size satellite instrument SIDRA intended for measurements of charged particle fluxes in o...

    O. V. Dudnik, M. Prieto, E. V. Kurbatov, S. Sanchez… in Solar System Research (2013)

  20. No Access

    Article

    X-ray spectrophotometer SphinX and particle spectrometer STEP-F of the satellite experiment CORONAS-PHOTON. Preliminary results of the joint data analysis

    A joint analysis is carried out of data obtained with the help of the solar X-ray SphinX spectrophotometer and the electron and proton satellite telescope STEP-F in May 2009 in the course of the scientific spa...

    O. V. Dudnik, P. Podgorski, J. Sylwester, S. Gburek, M. Kowalinski… in Solar System Research (2012)