Ionic Conductivity of Cubic Solid Solutions in the System CaO-Y2O3-ZrO2
Journal Article
·
· Journal of the American Ceramic Society
The ionic conductivity of cubic solid solutions in the system CaO-- Y2O3- ZrO2 was examined. Particular Y2O3 -- ZrO2 binary compositions were more conductive at elevated temperatures (7600 deg C) than either CaO-ZrO2 binary or CaOctivity appears to be related to a lower activation energy rather than to the number of oxygen vacancies dictated by composition, The compositions of highest conductivity lie close to the cubic- monoclinic solid-solution phase boundary, Conductivity-temperature data are presented that indicate a reversible order-disorder transition for Y2O3-ZrO cubic solid solutions containing 20 and 25 mole % Y2O3. The transference number for the oxygen ion at 1000 deg C for Y2O3ZrO2 cubic solid solutions is greater than 0.99.
- Research Organization:
- Westinghouse Research Labs., Pittsburgh
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-18-016014
- OSTI ID:
- 4058904
- Journal Information:
- Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 3 Vol. 47; ISSN 0002-7820
- Publisher:
- American Ceramic Society
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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