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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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Edwards, Danny J.
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Publications (5/5 displayed)
- 2022Interface effect of Fe and Fe<sub>2</sub>O<sub>3</sub> on the distributions of ion induced defectscitations
- 2010Degradation Mechanisms of SOFC Anodes in Coal Gas Containing Phosphoruscitations
- 2010Interaction of coal-derived synthesis gas impurities with solid oxide fuel cell metallic componentscitations
- 2010SOFC Ohmic Resistance Reduction by HCl-Induced Removal of Manganese at the Anode/Electrolyte Interfacecitations
- 2007Cleaning and passivation of copper surfaces to remove surface radioactivity and prevent oxide formationcitations
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article
Interface effect of Fe and Fe<sub>2</sub>O<sub>3</sub> on the distributions of ion induced defects
Abstract
<jats:p> The stability of structural materials in extreme nuclear reactor environments—with high temperature, high radiation, and corrosive media—directly affects the lifespan of the reactor. In such extreme environments, an oxide layer on the metal surface acts as a passive layer protecting the metal underneath from corrosion. To predict the irradiation effect on the metal layer in these metal/oxide bilayers, nondestructive depth-resolved positron annihilation lifetime spectroscopy (PALS) and complementary transmission electron microscopy (TEM) were used to investigate small-scale defects created by ion irradiation in an epitaxially grown (100) Fe film capped with a 50 nm Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> oxide layer. In this study, the evolution of induced vacancies was monitored, from individual vacancy formation at low doses—10<jats:sup>−5 </jats:sup>dpa—to larger vacancy cluster formation at increasing doses, showing the sensitivity of positron annihilation spectroscopy technique. Furthermore, PALS measurements reveal how the presence of a metal–oxide interface modifies the distribution of point defects induced by irradiation. TEM measurements show that irradiation induced dislocations at the interface is the mechanism behind the redistribution of point defects causing their accumulation close to the interface. This work demonstrates that the passive oxide layers formed during corrosion impact the distribution and accumulation of radiation induced defects in the metal underneath and emphasizes that the synergistic impact of radiation and corrosion will differ from their individual impacts. </jats:p>