The use of micro-Raman imaging to measure 18 O tracer distribution in thermally grown zirconia scales
Source abstract
Abstract
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.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear Materials and Properties · Nuclear reactor physics and engineering · Thermal and Kinetic Analysis
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