| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7895253 | Corrosion Science | 2015 | 10 Pages |
Abstract
High temperature Zircaloy-4 oxidation has been studied through two-stage oxidation experiments using 18O isotope. 18O distribution in the oxidation scales was investigated by micro-Raman imaging. First, zirconia standards with known 18O content were prepared and analyzed for calibration purposes. Then, to assess the method on a simple case, 18O tracer penetration patterns were recorded after a 800 °C two-stage oxidation. Finally, oxidation at 850 °C of a Zircaloy4 cladding tube pre-corroded at 425 °C to simulate corrosion during normal reactor operation was studied. These preliminary results give insights on the protective nature of the first formed zirconia scale in case of an accident.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
M. Guerain, M. Mermoux, C. Duriez,