The role of crystal orientation in the dissolution of UO2 thin films
| Autor: | Chris Nicklin, G. H. Lander, Jonathan Rawle, E. Lawrence Bright, J. E. Darnbrough, J. E. Sutcliffe, S. Rennie, Robert Burrows, Ross S Springell |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
General Chemical Engineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Synchrotron 0104 chemical sciences Corrosion law.invention X-ray reflectivity law X-ray crystallography Radiolysis Physical chemistry General Materials Science Thin film 0210 nano-technology Single crystal Dissolution |
| Zdroj: | Corrosion Science. 145:162-169 |
| ISSN: | 0010-938X |
| Popis: | Single crystal [0 0 1], [1 1 0], and [1 1 1]-oriented UO2 thin films were utilised to investigate the orientational dependence of radiolytic dissolution. The films were exposed to water in the presence of a synchrotron X-ray source to induce dissolution, with X-ray reflectivity (XRR) used to observe changes in morphology as a function of exposure time. The [0 0 1] and [1 1 0]-oriented films were found to corrode at comparable rates, however, the [1 1 1] film was significantly more corrosion resistant, passivating after the initial 90 s dissolution period. This result shows the orientational dependence of UO2 dissolution, which may have important consequences for theoretical dissolution models. |
| Databáze: | OpenAIRE |
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