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Thermal conductivity of Y2O3-stabilized ZrO2 cubic single crystals: effects of defect structureстатья
- Авторы: Agarkov D.A., Borik M.A., Katrich D.S., Larina N.A., Kulebyakin A.V., Lomonova E.E., Milovich F.O., Myzina V.A., Popov P.A., Ryabochkina P.A., Tabachkova N.Yu, Volkova T.V.
- Журнал: Journal of Solid State Electrochemistry
- Год издания: 2022
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- DOI: 10.1007/s10008-022-05308-6
- Аннотация: Yttria-stabilized zirconia is one of the most widely used solid electrolyte materials for solid oxide fuel cells (SOFCs) as well as solid oxide electrolysis cells (SOECs). The crystalline, defect structure, and heat conductivity of (ZrO2)1−x(Y2O3)x, crystals where x = 0.1, 0.2, 0.3 have been studied using Raman and optical spectroscopy and absolutely steady-state longitudinal heat flow method. The studies have shown that the main factors affecting the thermal conductivity of the crystals are the chemical composition, positions of oxygen vacancies relative to the trivalent cations of the stabilizing oxide, vacancy ordering, and the formation of defect complexes. The effect of changes in the local structure of the cubic solid solutions on the pattern of the temperature dependence of the thermal conductivity in the crystals has been discussed.
- Добавил в систему: Попов Павел Аркадьевич