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  1. No Access

    Article

    Synthesis and Physicochemical Properties of Nanopowders and Ceramics in a CeO2–Gd2O3 System

    Nanopowders with a composition of (СeO2)1–x(Gd2O3)x (x = 0.03, 0.05, 0.07, and 0.10) are synthesized by the coprecipitation method using cryotechnologies. The coherent scattering region (CSR) of the powders is 10...

    T. L. Simonenko, M. V. Kalinina, N. P. Simonenko… in Glass Physics and Chemistry (2018)

  2. No Access

    Article

    Preparation of highly porous Nb x Ta1–x C ceramics from polymer-matrix composite materials based on a phenol-formaldehyde binder and low hydrated hydroxide of niobium and tantalum

    Highly porous ceramics based on a niobium-tantalum carbide solid solution of composition Nb0.3Ta0.7C, with a density of 2.70 ± 0.02 g/cm3, total porosity of 77%, and compressive strength in the range 1.5–2.3 MPa ...

    I. D. Simonov-Emel’yanov, N. L. Shembel’, E. E. Nikishina… in Inorganic Materials (2015)

  3. No Access

    Article

    Preparation of high-porous SiC ceramics from polymeric composites based on diatomite powder

    High-porous SiC ceramics (density 0.50–0.58 g/cm3, porosity 82–84 %, compressive stress at break 3.7–6.3 MPa) was prepared by means of polymeric technology and natural raw material (diatomite powder, “Biosilica” ...

    E. P. Simonenko, N. P. Simonenko, M. A. Zharkov… in Journal of Materials Science (2015)

  4. No Access

    Article

    Low-temperature synthesis of TaC through transparent tantalum-carbon containing gel

    Thermodynamic modeling of the synthesis of tantalum monocarbide via the carbothermic reduction of tantalum(V) oxide indicates that TaC synthesis is thermodynamically plausible below 1000°C at pressures from 1 ...

    V. G. Sevast’yanov, E. P. Simonenko, N. A. Ignatov, Yu. S. Ezhov… in Inorganic Materials (2010)