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Journal of the European Ceramic Society
Article . 2025 . Peer-reviewed
License: CC BY
Data sources: Crossref
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Flash sintering of UO2 pellets for nuclear fuel and wasteform applications

Authors: Harrison, R. W.; Morgan, J.; Buckley, J.; Bostanchi, S.; Pearmain, D.; Abram, T.; Goddard, D.; +1 Authors

Flash sintering of UO2 pellets for nuclear fuel and wasteform applications

Abstract

Flash sintering (FS) has been shown to enhance the sintering kinetics in UO2. Using a bespoke AC-FS furnace, high density UO2 pellets, >95% theoretical density (TD) have been produced followed by scale up and Gd2O3 doping trials. Increasing furnace temperature during FS increases pellet density to a plateau, however, increasing hold time and maximum current both increased the density of UO2 samples to >95% TD and grain size to ~4 µm, close to conventional sintering (CS). The optimised FS program reduced sintering temperature and cycle time by ~50% compared to CS. Scale up trials showed >96%TD pellets could be achieved for 11.3 and 14.125 mm diameter green bodies, demonstrating typical fuel pellet diameters are feasible with FS. Gd doping experiments showed with 1 wt.% Gd2O3 addition, a ~92%TD pellet with ~2 µm grain size was obtainable, highlighting further optimisation is required for mixed oxide (MOx) materials.

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United Kingdom
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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