Thermodynamic modeling of the Re–Si–B system

The Re–Si and Re–B systems were thermodynamically modeled using the Calphad method. The obtained thermodynamic descriptions for the Re–Si and Re–B systems reproduce not only the phase equilibrium but also thermodynamic property data. The Re–Si–B thermodynamic description was then established through extrapolation of binary ones of Re–Si and Re–B developed in this work and B–Si from literature. The calculated Re–Si–B isothermal section at 1200 °C agrees well with experimental data. The calculated ternary liquidus projection predicts the liquid–solid phase equilibria in the Re–Si–B system for the first time, which can be used as a guidance for experimental design of future study.