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  1. No Access

    Article

    Preparation and Research of Chromium Coatings with Diamond Nanoparticles Deposited Directly on a Monolithic Composite of Niobium and Aluminum

    Electrochemical coatings of chromium modified with diamond nanoparticles applied directly on niobium-aluminum alloy were obtained. Diamond nanoparticles produced by detonation synthesis were used. Chromium coa...

    V. Petkov, M. Aleksandrova, R. Valov… in Protection of Metals and Physical Chemistr… (2023)

  2. No Access

    Article

    Heat Resistance of Laminated Niobium- and Molybdenum-Based Composites with Coatings

    The heat resistance of composite materials fabricated by diffusion welding under pressure and consisting of alternating layers of niobium, molybdenum, and Nb30Ti or Nb0.1C alloy or layers of Nb–Al, Ti–Al, or M...

    V. P. Korzhov, V. M. Kiiko, S. A. Abashkin… in Russian Metallurgy (Metally) (2022)

  3. No Access

    Article

    Dependence of the textural properties and surface species of ZnO photocatalytic materials on the type of precipitating agent used in the hydrothermal synthesis

    Three different precipitating agents (NaOH, \(\hbox {NH}_{4}(\hbox {H})\hbox {CO}_{3}\) ...

    I Stambolova, V Blaskov, D Stoyanova, I Avramova… in Bulletin of Materials Science (2017)

  4. No Access

    Article

    Application of activated M/ZnO (M = Mn, Co, Ni, Cu, Ag) in photocatalytic degradation of diazo textile coloring dye

    Activated ZnO powder has been prepared by procedures involving first its dissolution in nitric acid, then simultaneous treatment by adding NH4OH and CO2 bubbling leading to precipitation as Zn(OH)CO3 (ZH) and fur...

    K. Milenova, I. Avramova, A. Eliyas… in Environmental Science and Pollution Resear… (2014)

  5. No Access

    Article

    Effect of substrate type, dopant and thermal treatment on physicochemical properties of TiO2–SnO2 sol–gel films

    Thin nanocrystalline TiO2–SnO2 films (0–50 mol% SnO2) were prepared on quartz and stainless steel substrates by sol–gel coating method. The obtained films were investigated by XRD, Raman spectroscopy and XPS. The...

    I STAMBOLOVA, V BLASKOV, S VASSILEV, M SHIPOCHKA… in Bulletin of Materials Science (2012)

  6. No Access

    Article

    Mechanochemically activated synthesis of nanostructured NiFe2O4

    Powdery NiFe2O4 has been obtained by mechanothermal treatment. Nickel and iron hydroxides are used as initial compounds. For comparison the initial compounds are calcinated without mechanical treatment (samples o...

    Z. Cherkezova-Zheleva, V. Blaskov, I. Mitov, D. Klissurski, D. Radev… in Inorganic Materials (2011)

  7. No Access

    Article

    Thin ZrO2 sol–gel films for catalytic applications

    The possibilities of excimer laser processing for increasing the specific surface area of sol–gel ZrO2 thin films for catalytic applications are studied. It is established that as a result of laser irradiation, t...

    E. Krumov, J. Dikova, K. Starbova, D. Popov… in Journal of Materials Science: Materials in… (2003)

  8. No Access

    Article

    Effect of mechanical activation on the synthesis of α-Fe2O3-Cr2O3 solid solutions

    Continuous α-Fe2O3-Cr2O3 solid solution series have been synthesized by two methods: (i) direct heating of coprecipitated hydroxides, and (ii) mechanical pre-treatment followed by heating. It is shown that mechan...

    P. Tsokov, V. Blaskov, D. Klissurski, I. Tsolovski in Journal of Materials Science (1993)

  9. No Access

    Article

    The thermal decomposition mechanism of iron(III) hydroxide carbonate to α-Fe2O3

    The thermal decomposition mechanism of iron(III) hydroxide carbonate prepared through hydrolysis and oxidation of FeCO3 is studied under both static and dynamic conditions. It is established that the precursor is...

    L. Markov, V. Blaskov, D. Klissurski, S. Nikolov in Journal of Materials Science (1990)