Thermodynamic assessment of the palladium–selenium (Pd–Se) system

Abstract

Palladium and selenium are fission products produced in the nuclear fuel under irradiation. To better understand the high temperature thermochemistry of these elements, the Pd–Se phase diagram was assessed using the Calphad method. The Pd–Se binary description was optimized using thermodynamic and phase diagram data from the literature and some DTA experiments performed in this work. The calculated phase diagram and thermodynamic properties are consistent with the experimental results in the whole Pd–Se composition range.