Solidus and liquidus of plutonium and uranium mixed oxide

Design of a fuel element for a lead-cooled fast reactor

“…Therefore this dependence is neglected in the following preliminary estimations. The same source [26] reported the liquidus temperature of 3090 ± 50 K and the solidus temperature of 3052 ± 35 K for Pu 0.2 U 0.8 O 2.00 , which are in good agreement with the correlations presented in [27], whose authors recommend a liner decrease of the MOX melting temperature with burnup with the rate of 0.5 K per 1 MW d kg À1 . This recommendation yields the melting temperature of 3040 K for the MOX with burnup Bu Max = 100 MW d kg À1 .…”

“…Some contradictory results were communicated in Ref. [26]. Therefore this dependence is neglected in the following preliminary estimations.…”

Melting behaviour of americium-doped uranium dioxide

“…Given the limited amount and the high radioactivity of the investigated material, this dataset size was considered to be satisfactory, in that it permitted to obtain significant average values and standard deviations for each composition. The laser pulses lead to maximum temperatures between 3350 K and 3550 K. These temperatures compared with the expected values of the solid/liquid phase transitions for the pure dioxides [21][22][23][24][25]27,29], can be considered to be high enough to melt a sufficient amount of material to obtain a consistent thermal analysis during the cooling stage of the experiments.…”

Lattice parameters of (U, Pu, Am, Np)O2−x

“…As a part of the development, previous reports have investigated the effects of MA on physical properties, melting temperatures, thermal conductivities, oxygen potentials, lattice parameters and phase separation [3][4][5][6][7][8][9][10].…”