Thermodynamic Properties of VC at High Temperatures
Open Access
- 1 January 1962
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 109 (9) , 835-381
- https://doi.org/10.1149/1.2425564
Abstract
Oxygen‐18 enriched oxygen and carbon dioxide‐carbon monoxide atmospheres have been used in the determination of the oxygen self‐diffusion coefficient in monoclinic zirconia at 990 °C. Oxygen exchange measurements were made on zirconia spheres in the average size ranges of 90 and 126µ. The diffusion coefficient was found to be independent of both oxygen partial pressure over the range 1–10−19 atm and sphere size. The value of the diffusion constant has been used with previously determined electrical conductivity data to verify postulates of a defect model involving oxygen ion vacancies for monoclinic zirconia.Keywords
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