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Production of WO3 tungsten oxide nanopowders by evaporation-condensation process using focused 24-GHz microwave radiation

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Abstract

Fabrication of WO3 tungsten oxide nanoparticles by evaporation of the initial oxide material with a focused beam of 24-GHz electromagnetic radiation generated in a 5-kW gyrotron complex at a design microwave power density of 10 kW/cm2 has been experimentally studied. Tungsten oxide powders consisting of particles, which sizes are in range of 20 nm up to 1 μm, have been obtained. The particles have different shapes, close to spherical or octahedral, suggesting their formation via both the “vapor-liquid-crystal” and the “vapor-crystal” mechanism. The maximal evaporation rate was 100 g/h. The feasibility of powder dispersity controlling by varying the flow rate of cooling air has been revealed.

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Authors and Affiliations

  1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr. 49, Moscow, 119991, Russia

    A. V. Samokhin, N. V. Alekseev, M. A. Sinaiskii & Yu. V. Tsvetkov

  2. Institute of Applied Physics, Russian Academy of Sciences, ul. Ulyanovoi 46, Nizhny Novgorod, 603950, Russia

    A. V. Vodop’yanov, D. A. Mansfeld, A. G. Eremeev & I. V. Plotnikov

  3. Lobachevsky State University of Nizhny Novgorod, pr. Gagarina 23, Nizhny Novgorod, 603950, Russia

    A. V. Vodop’yanov

Authors
  1. A. V. Samokhin
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  2. N. V. Alekseev
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  3. A. V. Vodop’yanov
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  4. D. A. Mansfeld
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  5. M. A. Sinaiskii
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  6. Yu. V. Tsvetkov
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  7. A. G. Eremeev
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  8. I. V. Plotnikov
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Corresponding author

Correspondence to A. V. Samokhin.

Additional information

Original Russian Text © A.V. Samokhin, N.V. Alekseev, A.V. Vodop’yanov, D.A. Mansfeld, M.A. Sinaiskii, Yu.V. Tsvetkov, A.G. Eremeev, I.V. Plotnikov, 2015, published in Khimiya Vysokikh Energii, 2015, Vol. 49, No. 4, pp. 302–307.

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Samokhin, A.V., Alekseev, N.V., Vodop’yanov, A.V. et al. Production of WO3 tungsten oxide nanopowders by evaporation-condensation process using focused 24-GHz microwave radiation. High Energy Chem 49, 267–272 (2015). https://doi.org/10.1134/S0018143915040141

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  • DOI: https://doi.org/10.1134/S0018143915040141

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