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The Electric Conductivity of Poly- and Singlecrystaline Y2O3 in Oxidative Atmosphere

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Abstract

Comparative impedance measurements of electric conductivity of nominally undoped yttria are carried out for samples with sharply differing morphologies, namely, single crystals and porous ceramics (with a density of 67%) over a 980–350°С temperature range in air atmosphere of different humidity (рН2О= 40–3000 Pa). Dilatometric analysis of possible structure changes is carried out. The effects of uncontrolled impurities on the yttria defect structure are analyzed.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Division, Russian Academy of Sciences, Yekaterinburg, 620137, Russia

    A. I. Kovrova, V. P. Gorelov & A. V. Kuz’min

  2. Ural Federal University named after the first President of Russia B.N. Yeltsin, Yekaterinburg, 620002, Russia

    A. V. Kuz’min

  3. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg, 194021, Russia

    B. A.-T. Melekh

Authors
  1. A. I. Kovrova
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  2. V. P. Gorelov
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  3. A. V. Kuz’min
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  4. B. A.-T. Melekh
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Correspondence to A. I. Kovrova.

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Original Russian Text © A.I. Kovrova, V.P. Gorelov, A.V. Kuz’min, B.A.-T. Melekh, 2018, published in Elektrokhimiya, 2018, Vol. 54, No. 9, pp. 838–846.

Published on the basis of materials of the First International Conference on Intelligent Technologies in Power Engineering, Yekaterinburg, 2017.

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Kovrova, A.I., Gorelov, V.P., Kuz’min, A.V. et al. The Electric Conductivity of Poly- and Singlecrystaline Y2O3 in Oxidative Atmosphere. Russ J Electrochem 54, 733–740 (2018). https://doi.org/10.1134/S1023193518090057

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  • DOI: https://doi.org/10.1134/S1023193518090057

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