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- Publisher
- Springer Journals
- Copyright
- Copyright © 1998 by IfI - Institute for Ionics
- Subject
- Chemistry; Biomedicine general; Analytical Chemistry; Physical Chemistry; Electrochemistry; Optical and Electronic Materials
- ISSN
- 0947-7047
- eISSN
- 1862-0760
- DOI
- 10.1007/BF02375776
- Publisher site
- See Article on Publisher Site
Abstract
The effect of alumina additions on the ionic conductivity and mechanical properties of 3 and 8 mol% Y2O3 - ZrO2 compositions has been investigated. Such materials are of interest for use in fuel cells and other similar applications. Sintered specimens were characterised by XRD, SEM, impedance spectroscopy, four — probe DC conductivity and mechanical strength measurements. Alumina additions had no affect on the conductivity degradation behaviour at 1000 °C and the activation energy but resulted in an increase in the strength of 8 mol% Y2O3 - ZrO2 composition by about 25%. However, a significant drop in the ionic conductivity well above what could be accounted for by the decrease in the volume fraction of the conducting phase, was observed.
Journal
Ionics – Springer Journals
Published: Mar 21, 2006