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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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Scott, Thomas Bligh
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2023An investigation of the reaction of metallic uranium with oxygen/nitrogen gas mixturescitations
- 2022Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlationcitations
- 2021Investigating the microstructure and mechanical behaviour of simulant "lava-like" fuel containing materials from the Chernobyl reactor unit 4 meltdowncitations
- 2018A study of dynamic nanoscale corrosion initiation events by HS-AFMcitations
- 2018In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 2citations
- 2017Investigating corrosion using high-speed AFM
- 2017In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1:citations
- 2016The crystallographic structure of the air-grown oxide on depleted uranium metalcitations
- 2016Structural effects in UO 2 thin films irradiated with U ionscitations
- 2016Atomic-scale Studies of Uranium Oxidation and Corrosion by Water Vapourcitations
- 2016Structural effects in UO2 thin films irradiated with U ionscitations
- 2015Nuclear waste viewed in a new lightcitations
- 2015Structural deformation of metallic uranium surrounding hydride growth sitescitations
- 2015Characterisation of electrodeposited polycrystalline uranium dioxide thin films on nickel foil for industrial applicationscitations
- 2015An investigation into heterogeneity in a single vein-type uranium ore depositcitations
- 2015The effects of metal surface geometry on the formation of uranium hydridecitations
- 2015The role of ferrite in Type 316H austenitic stainless steels on the susceptibility to creep cavitationcitations
- 2015An investigation on the persistence of uranium hydride during storage of simulant nuclear waste packagescitations
- 2014Electronic properties of γ-U and superconductivity of U–Mo alloyscitations
- 2013A surface science study of the initial stages of hydrogen corrosion on uranium metal and the role played by grain microstructurecitations
- 2013Altering the hydriding behaviour of uranium metal by induced oxide penetration around carbo-nitride inclusionscitations
- 2011Enhanced reactivity of nanoscale iron particles through a vacuum annealing process.citations
- 2010Oxidative corrosion of carbide inclusions at the surface of uranium metal during exposure to water vapour.
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article
Nuclear waste viewed in a new light
Abstract
How do you characterise the contents of a sealed nuclear waste packagewithout breaking it open? This question is important when the containedcorrosion products are potentially reactive with air and radioactive.Synchrotron X-rays have been used to perform micro-scale in-situobservation and characterisation of uranium encapsulated in grout; asimulation for a typical intermediate level waste storage packet. X-raytomography and X-ray powder diffraction generated both qualitative andquantitative data from a grout-encapsulated uranium sample before, andafter, deliberately constrained H<sub>2</sub> corrosion. Tomographicreconstructions provided a means of assessing the extent, rates andcharacter of the corrosion reactions by comparing the relative densitiesbetween the materials and the volume of reaction products. Theoxidation of uranium in grout was found to follow the anoxic U + H<sub>2</sub>Ooxidation regime, and the pore network within the grout was observed toinfluence the growth of uranium hydride sites across the metal surface.Powder diffraction analysis identified the corrosion products as UO<sub>2</sub> and UH<sub>3</sub>,and permitted measurement of corrosion-induced strain. Together, X-raytomography and diffraction provide means of accurately determining thetypes and extent of uranium corrosion occurring, thereby offering afuture tool for isolating and studying the reactions occurring in realfull-scale waste package systems.