Thermodynamic assessment of the sulfur and the nickel-sulfur systems

The sulfur and the nickel-sulfur binary systems are important in many fields. In this work, the pure sulfur is remodeled within the framework of the third-generation database approach from 0 K to above the melting point. Likewise, a new thermodynamic dataset is developed for the nickel sulfur binary system. The new thermodynamic dataset provides a reliable description of all relevant intermetallic and non-stoichiometric phases. The supercooled liquid described using the two-state liquid model is considered more realistic. An assessment on the sulfur solubility in FCC nickel is also conducted in this work. The calculated phase diagram, thermodynamic and thermophysical data show good agreement with the literature.