Effect of Rare Earth Addition on Electrical Properties of Zirconia Based Ceramics

Abstract:

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Applications of stabilized zirconia include uses related to its low thermal conductivity, strength and electrical properties. Rare earth oxides (REO) were used as additives to stabilize appropriate crystalline phases at zirconia compacts. In this work zirconia based solid electrolytes were sintered with 10, 15 and 20 wt % of REO as sintering aids. Samples were prepared by uniaxial cold press and sintered at 1400 °C, followed by electric properties determination via impedance spectroscopy. Complimentary characterization was made by X-Ray diffractometry and quantitative phase analysis by Rietveld refinement. The ionic conductivity is affected by the amount of REO additive and this effect is correlated to the existing tetragonal and cubic phases for each composition

Info:

Periodical:

Materials Science Forum (Volumes 660-661)

Edited by:

Lucio Salgado and Francisco Ambrozio Filho

Pages:

652-657

DOI:

10.4028/www.scientific.net/MSF.660-661.652

Citation:

R.A. Muñoz et al., "Effect of Rare Earth Addition on Electrical Properties of Zirconia Based Ceramics", Materials Science Forum, Vols. 660-661, pp. 652-657, 2010

Online since:

October 2010

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$35.00

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