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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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Turner, Joel
University of Manchester
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Development of high-temperature-steam Resistant UN via the addition of UB 2
- 2024Development of high-temperature-steam Resistant UN via the addition of UB2
- 2023Fabrication and thermal conductivity of UN-UB2 composites fabricated by spark plasma sinteringcitations
- 2020Synthesis of Candidate Advanced Technology Fuel: Uranium Diboride (UB2) via Carbo/Borothermic Reduction of UO2
- 2020Synthesis of Candidate Advanced Technology Fuel: Uranium Diboride (UB2) via Carbo/Borothermic Reduction of UO2citations
- 2020Steam Performance of UB2/U3Si2 Composite Fuel Pellets, Compared to U3Si2 Reference Behaviourcitations
- 2019A high density composite fuel with integrated burnable absorber: U3Si2-UB2citations
- 2018The use of gadolinium as a burnable poison within U 3 Si 2 fuel pelletscitations
- 2018The use of gadolinium as a burnable poison within U3Si2 fuel pelletscitations
Places of action
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article
Development of high-temperature-steam Resistant UN via the addition of UB2
Abstract
A composite UN fuel containing 10wt% UB<sub>2</sub> has been manufactured via spark plasma sintering using different milling methods prior to sintering, and the resulting pellets characterised to understand the effects of UB<sub>2</sub> location and morphology on UN sintering behaviour and oxidation performance. Differences in microstructure and phases present were observed, with planetary ball milling leading to smaller UB<sub>2</sub> inclusions as well as the formation of a UBN phase on sintering. Composite pellets showed an increase in the steam oxidation onset temperature when compared to UN at similar density and manufactured from the same feedstock. Of particular note was the behaviour of one sample with a comparably low density (∼92%) which had an onset temperature of 823 K and a significantly reduced rate of reaction compared to monolithic UN at similar density. This provides the first confirmatory evidence that UB<sub>2</sub> limits the UN-steam reaction by some other mechanism than simply promoting a high-density microstructure. This is supported by examination of post-oxidation composite material, which shows a varied and more complex morphology compared to reference UN samples, including large apparently-bound agglomerates and limited free fine particulate.