Assessment of solid/liquid equilibria in the (U, Zr)O2+y system
Solid/liquid equilibria in the system UO2eZrO2 are revisited in this work by laser heating coupled with
fast optical thermometry. Phase transition points newly measured under inert gas are in fair agreement
with the early measurements performed by Wisnyi et al., in 1957, the only study available in the literature
on the whole pseudo-binary system. In addition, a minimum melting point is identified here for
compositions near (U0.6Zr0.4)O2þy, around 2800 K. The solidus line is rather flat on a broad range of