Skip to main content

20 Result(s)

within V. V. Potapov Remove this filter Characterization and Evaluation of Materials Remove this filter

and

  1. No Access

    Article

    Characteristics of NanoSilica Produced from Hydrothermal Solutions

    SiO2 sols and nanopowders are produced from hydrothermal solutions using the following processes: polycondensation of orthosilicic acid, ultrafiltration membrane concentration, and cryochemical vacuum sublimation...

    V. V. Potapov, A. A. Serdan in Glass Physics and Chemistry (2017)

  2. No Access

    Article

    Classification of Granular Material in an Impact with a Separation Surface

    The basic equation of dynamics characterizing the behavior of particles in a collision with a separation surface is presented. Results of a calculation of the angle and velocity of reflection and the time and ...

    S. A. Lyaptsev, V. Ya. Potapov, S. Ya. Davydov… in Refractories and Industrial Ceramics (2015)

  3. No Access

    Article

    Separation of Solid Inclusions from Clay Stock on the Basis of Friction and Elasticity

    Flow diagrams for the separation of solid inclusions of clay based on the use of the friction and elastic characteristics of the separable phases are considered. Results of investigations and equipment for the...

    V. Ya. Potapov, S. Ya. Davydov, V. V. Potapov in Refractories and Industrial Ceramics (2013)

  4. No Access

    Article

    Enhancement of concrete durability by introducing SiO2 nanoparticles

    We used SiO2 nanoparticles, introducing them as stable aqueous sols from hydrothermal solutions, to enhance the mechanical properties of concrete. SiO2 nanoparticles 10–100 nm in size with a specific surface of 6...

    V. V. Potapov, A. V. Tumanov, M. S. Zakurazhnov… in Glass Physics and Chemistry (2013)

  5. No Access

    Article

    Influence of silica nanoparticles on the strength characteristics of cement samples

    The influence of silica nanoparticles on the properties of systems of the cement-sand-water type was investigated experimentally. Nanoparticles were separated from natural hydrothermal solutions according to t...

    V. V. Potapov, E. S. Shitikov, N. S. Trutnev, V. A. Gorbach… in Glass Physics and Chemistry (2011)

  6. No Access

    Article

    Characteristics of vitrified liquid radioactive wastes prepared with the use of aqueous silica sols

    Solid samples of vitrified model liquid radioactive wastes (LRWs) are produced by treating their components with hydrochloric acid-water-alcohol solutions containing ethoxysilane hydrolysates and aqueous silic...

    V. V. Potapov, D. G. Kuznetsov, L. M. Antipin… in Glass Physics and Chemistry (2009)

  7. No Access

    Article

    Polycondensation of orthosilicic acid in hydrothermal solutions at different temperatures, pH values, and ionic strengths

    The kinetics of polycondensation of orthosilicic acid in hydrothermal solutions is investigated at different temperatures, pH values, and ionic strengths. The equations approximating the time dependence of the...

    V. V. Potapov, A. A. Serdan, V. N. Kashpura, V. A. Gorbach… in Glass Physics and Chemistry (2007)

  8. No Access

    Article

    Synthesis of precious opal in a hydrothermal solution

    The nucleation of orthosilicic acid and the growth of colloidal silica particles in hydrothermal solutions are investigated. The results obtained are compared with the data on the formation of supramolecular m...

    V. V. Potapov, D. V. Kamashev in Glass Physics and Chemistry (2006)

  9. No Access

    Article

    Temperature Dependence of the Concentration of Silanol Groups in Silica Precipitated from a Hydrothermal Solution

    The physicochemical characteristics of amorphous silica precipitated from a hydrothermal solution are investigated. The specific surface of silica is determined by the Brunauer-Emmett-Teller method from the da...

    V. V. Potapov, L. T. Zhuravlev in Glass Physics and Chemistry (2005)

  10. No Access

    Article

    Formation of Solid Deposits of Amorphous Silica in a Flow of Hydrothermal Solution

    The formation of solid deposits of amorphous silica is investigated experimentally. It is established that the deposits are formed through the mass transfer of colloidal particles from a flow of a hydrothermal...

    V. V. Potapov in Glass Physics and Chemistry (2004)

  11. No Access

    Article

    Precipitation of Amorphous Silica from a High-Temperature Hydrothermal Solution

    The polymerization of monomeric silica in a hydrothermal solution with the formation of colloidal silica particles is investigated experimentally. The coagulation and precipitation of colloidal silica in an aq...

    V. V. Potapov in Glass Physics and Chemistry (2004)

  12. No Access

    Article

    Distinctive features of corrosion cracking of high-strength steels

    Experimental data on the corrosion cracking resistance of high-strength steel with a yield limit σ0.2 ℞ 1000 MPa in 3.5 % NaCl solution are presented. It is shown that cracking resistance can be estimated by usin...

    V. N. Malyshev, V. V. Potapov in Materials Science (1995)

  13. No Access

    Article

    Influence of moisture absorption on the fatigue resistance of the metal base

    V. N. Malyshev, V. V. Potapov in Soviet materials science : a transl. of Fi… (1986)

  14. No Access

    Article

    Analysis of models for the calculation of strength realization of aramide fibers in threads and microplastics

    L. V. Kompaniets, V. V. Potapov, G. A. Grigoryan… in Mechanics of Composite Materials (1983)

  15. No Access

    Article

    Fatigue resistance of high-strength corrosion-resistant steel 07Kh16N4B in air and in seawater

    1. For steel 07Kh16N4B in the low-cycle fatigue region, heat treatment and seawater have no marked effect on endurance.

      ...

    V. G. Azbukin, I. E. Kolosov, V. N. Pavlov, V. V. Potapov in Strength of Materials (1981)

  16. No Access

    Article

    Characteristics of the fatigue failure of steel OKh18N10T in a 42% solution of MgCl2

    Yu. M. Zafiiovskii, Yu. V. Zima… in Soviet materials science : a transl. of Fi… (1976)

  17. No Access

    Article

    Corrosion-fatigue failure of low-carbon and austenitic stainless steels at elevated temperatures and under the periodic influence of working media

    B. F. Koliushko, I. Yu. Liskevich… in Soviet materials science : a transl. of Fi… (1975)

  18. No Access

    Article

    A method for corrosion-fatigue testing with severe loading in media at elevated temperatures and pressures

    G. V. Karpenko, N. N. Tkachenko… in Soviet materials science : a transl. of Fi… (1973)

  19. No Access

    Article

    The nature of the corrosion-fatigue failure of austenitic steel in hot chloride solutions

    G. V. Karpenko, N. N. Tkachenko… in Soviet materials science : a transl. of Fi… (1973)

  20. No Access

    Article

    Corrosion-fatigue strength of steel 0Cr18Ni10Ti in aqueous NaCl and MgCl2 solutions at high temperatures and pressures

    The corrosion-fatigue strength of steel 0Cr18Ni10Ti under axial-cyclic loads in aqueous NaCl and MgCl2 solutions at elevated temperatures and high pressures was studied. The results obtained indicate that the cor...

    G. V. Karpenko, N. N. Tkachenko… in Soviet materials science : a transl. of Fi… (1972)