Uranium nitride from uranyl citrate gel combustion and electrospray-assisted granulation
We report a novel synthesis route for uranium nitride via carbothermal reduction and nitridation of a precursor obtained by combusting a uranyl citrate gel under argon. The gel combustion results in a powder in which nanometric UO2 islands are finely dispersed in a carbon matrix. This powder was then granulated via a novel electrospray-assisted granulation method and finally carbothermally reduced under a nitrogen atmosphere to yield single-phase UN. The UN granules were then densified to high density via spark plasma sintering, while conventional pressure-less sintering resulted in low density.
BONANI Walter;
BOSHOVEN Co;
COLOGNA Marco;
2025-09-12
ELSEVIER
JRC142494
1873-4820 (online),
https://www.sciencedirect.com/science/article/pii/S0022311525004301?via%3Dihub,
https://publications.jrc.ec.europa.eu/repository/handle/JRC142494,
10.1016/j.jnucmat.2025.156036 (online),
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