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

A. I. KovrovaA. I. Kovrova, V. P. GorelovV. P. Gorelov, A. V. Kuz’minA. V. Kuz’min, B. A.-T. MelekhB. A.-T. Melekh
Российский электрохимический журнал
Abstract / Full Text

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.

Author information
  • Institute of High-Temperature Electrochemistry, Ural Division, Russian Academy of Sciences, Yekaterinburg, 620137, RussiaA. I. Kovrova, V. P. Gorelov & A. V. Kuz’min
  • Ural Federal University named after the first President of Russia B.N. Yeltsin, Yekaterinburg, 620002, RussiaA. V. Kuz’min
  • Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg, 194021, RussiaB. A.-T. Melekh
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