Revisiting the melting temperature of NpO2 and the challenges associated with high temperature actinide compound measurements
Many refractory oxides display very high oxygen potential at temperatures close to melting (around 3000 K), ), i.e. a tendency to exchange oxygen with their environment and chemically react with it. Among others, this has been shown to be particularly true for a few actinide dioxides (e.g.: UO2, PuO2) extensively used as components of nuclear fuel. The high chemical reactivity of these materials constitutes a further safety issue in the unlikely event of uncontrolled thermal excursion in a nuclear plant. The behaviour of these oxides at temperatures approaching melting in oxidizing or reducing conditions is therefore of great interest not only from a basic materials research viewpoint, but also for the ultimate sake of nuclear reactor safety.
(The rest is found in the attached file. Otherwise Pubsy gives an error message)
BÖHLER Robert;
WELLAND Mike;
DE BRUYCKER Franck;
BOBORIDIS Konstantinos;
JANSSEN Arne;
ELOIRDI Rachel;
KONINGS Rudy;
MANARA Dario;
2012-11-06
AMER INST PHYSICS
JRC69369
0021-8979,
http://dx.doi.org/10.1063/1.4721655,
https://publications.jrc.ec.europa.eu/repository/handle/JRC69369,
10.1063/1.4721655,
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