Rev.Adv.Mater.Sci. (RAMS)
No 1, Vol. 32, 2012, pages 34-43

THE EFFECT OF NANOSIZE Y2O3-ZrO2, Ce2O3-ZrO2, AND Ce2O3-Y2O3-ZrO
PRECURSOR DISPERSITY ON THE CONDUCTIVITY AND
SENSOR PROPERTIES OF FINAL CERAMICS

V.G. Konakov, A.V. Shorokhov, N.V. Borisova, S.N. Golubev, E.N. Solovieva and V.M. Ushakov

Abstract

Nanosize precursors with controlled dispersity were synthesized using the reverse coprecipitation sol-gel method by varying the concentrations of the initial salt solutions. A set of final ceramics (0.08Y2O3-0.92ZrO2, 0.09Ce2O3-0.91ZrO2, 0.06Ce2O3 -0.06Y2O3-0.88ZrO2, mol.%) was produced from the precursor powders of different dispersity; their conductivity and sensor properties were investigated. As a result, 0.08Y2O3-0.92ZrO2 ceramics manufactured from the precursor powders with the average agglomerate size of 100-140 nm was shown to be the optimal choice for the use as a solid electrolyte with anionic conductivity.

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