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AC Conductivity Based Microstructural Characterization of Yttria Stabilized Zirconia

Published online by Cambridge University Press:  17 March 2011

G. Sauti  and
D.S. McLachlan
G. Sauti
Affiliation:
School of Physics and Material Physics Research Institute, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa
D.S. McLachlan
Affiliation:
School of Physics and Material Physics Research Institute, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa
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Abstract

AC conductivity experiments, or Impedance Spectroscopy, at temperatures between 100 and 400°C, made on 8 mole % Yttria Stabilized Zirconia (8YSZ) with different grain sizes, are presented. The results are analyzed using Effective Media Theories, the Brick Layer Model and percolation theory. The results obtained are satisfactory, only if the measured frequency dependant complex conductivity parameters of the grains are inserted in the equations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 699: Symposium R – Electrically Based Microstructural Characterization III , 2001 , R8.6
Copyright
Copyright © Materials Research Society 2002

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