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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Springell, Ross
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Topics
Publications (6/6 displayed)
- 2024Polyepitaxial grain matching to study the oxidation of uranium dioxidecitations
- 2024Radiation Effects in Uranium Nitride and Zirconium Nitride
- 2019Comparing the corrosion of uranium nitride and uranium dioxide surfaces with H2O2citations
- 2018Chemistry and Corrosion in the irradiated cooling circuits of a prototype fusion power station
- 2016Structural effects in UO 2 thin films irradiated with U ionscitations
- 2016Structural effects in UO2 thin films irradiated with U ionscitations
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article
Comparing the corrosion of uranium nitride and uranium dioxide surfaces with H2O2
Abstract
<p>Uranium mononitride, UN, is considered a potential accident tolerant fuel due to its high uranium density, high thermal conductivity, and high melting point. Compared with the relatively inert UO<sub>2</sub>, UN has a high reactivity in water, however, studies have not considered the significant effect of radiation, which is known to cause corrosion of UO<sub>2</sub>. This study uses 0.1 M H<sub>2</sub>O<sub>2</sub>to simulate the effects of water radiolysis in order to compare the radiolytic corrosion rates of UO<sub>2</sub>, UN, and U<sub>2</sub>N<sub>3</sub>thin films at room temperature. X-ray reflectivity was used to investigate the changes in film morphology as a function of H<sub>2</sub>O<sub>2</sub>exposure time, allowing changes in film thickness and roughness to be observed on the Ångstrom length-scale. Results showed significant differences between UO<sub>2</sub>, UN, and U<sub>2</sub>N<sub>3</sub>, with corrosion rates of 0.083(3), 0.020(4), and 0.47(8) Å/s, respectively, showing that UN corrodes more slowly than UO<sub>2</sub>in 0.1 M H<sub>2</sub>O<sub>2</sub>.</p>