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In the present experimental study, after studying the impact of phase separation on (U1-y,Puy)O2-x MOX fuel at y=0.45 and.0.55 at room temperature, phase equilibria has been investigated at high temperature up to 1700K by High Temperature X-Ray Diffraction measurements. We provide new data on the phase separation temperature, demonstrating that phase equilibria are highly influenced by fuel composition...
The Fe-U system is one of the binaries of the U-Fe-Zr-O quaternary system that is important for a safe nuclear program. A new thermodynamic assessment of Fe-U is presented, taking into account some recent thermodynamic measurements: enthalpy of formation and of melting as well as heat capacities for both intermetallic compounds Fe2U and FeU6. The calculated phase diagram and thermodynamic data generally...
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