Thermodynamic Investigation of the NaBr-RbBr System

In this paper, the NaBr-RbBr binary system was computationally investigated. Experimental data including phase diagram and thermodynamic information are used as input data for the CALPHAD assessment. The liquid and solid solutions are treated as substitutional solutions and the solid solutions (NaBr, RbBr, both FCC type) were modeled as a single phase with a miscibility gap. Our calculations are in good agreement with the phase diagram data and experimental thermodynamic data available in the literature.