| Autor: |
Graeme E. Murch, Manfred Martin, Irina V. Belova, Dominik Samuelis |
| Rok vydání: |
2006 |
| Předmět: |
|
| Zdroj: |
Defect and Diffusion Forum. :247-252 |
| ISSN: |
1662-9507 |
| DOI: |
10.4028/www.scientific.net/ddf.258-260.247 |
| Popis: |
In this paper, the phenomenon of steady-state cation demixing in yttria-stabilized zirconia in an electric field is examined for the case of an open system wherein the defects are everywhere close to internal surfaces which allow the Schottky-defect reaction to occur (very fine grain material). The effect of the constant electric field assumption as a substitute for the constant current condition is analyzed for diffusion by vacancy-pairs and by vacancy-triplets over a wide range of applied electric fields. It is shown that the assumption of a constant electric field provides only a moderate correction to the shape of the demixing concentration profile. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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