Behavior of melts in the UO2-SiO2 system in the liquid-liquid phase separation region

@article{Petrov2009BehaviorOM,
  title={Behavior of melts in the UO2-SiO2 system in the liquid-liquid phase separation region},
  author={Yu. B. Petrov and Yu. P. Udalov and J{\'a}n {\vS}ubrt and Snejana Bakardjieva and P. Sazavsky and M. Kiselova and Pavel Seluck{\'y} and Petr Bezdi{\vc}ka and C. Jorneau and Pascal Piluso},
  journal={Glass Physics and Chemistry},
  year={2009},
  volume={35},
  pages={199-204}
}
The behavior of melts in the uranium oxide-silicon dioxide system is experimentally investigated in air upon induction melting in a “cold crucible.” The existence of the two-phase liquid region in this system is confirmed. It is demonstrated that the melts absorb oxygen from air, which leads to crystallization of the UO2.25 compound upon cooling. In the case of considerable internal heat release, sharp cooling of the melt surface results in the liberation of gas, which brings about bulging and… 
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TLDR
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References

SHOWING 1-6 OF 6 REFERENCES
New Miscibility Gap for Ex-vessel Corium Oxide Compositions
New miscibility gaps in the liquid state (MG) have been revealed for some prototypic oxidic corium compositions in air thanks to induction melting in cold crucible. Tests with binary mixtures of
X-RAY STUDIES OF SYNTHETIC COFFINITE, THORITE AND URANOTHORITES
X-ray data are presented for synthetic coffinite, thorite, and several uranothorites. The cell constants obtained for coffinite are a = 6.981 plus or minus 0.004 kX, c = 6.250 plus or minus 0.005 kX;