Thermophysical properties of SF6–Cu mixtures at temperatures of 300–30 000 K and pressures of 0.01–1.0 MPa: part 1. Equilibrium compositions and thermodynamic properties considering condensed phases

The equilibrium compositions and thermodynamic properties of SF6–Cu mixtures with copper proportions up to 50% are calculated as a function of temperature from 300 to 30 000 K and pressure from 0.01 to 1.0 MPa. The condensed phases and Debye–Huckel corrections are both taken into account. The influences of condensed phases, Debye–Huckel corrections, copper proportions and gas pressures on the composition and/or thermodynamic properties are discussed in detail under various conditions. Some results are tabulated for the modelling of SF6 arc plasmas contaminated by Cu.