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

Mingzhe Rong, Linlin Zhong, Yann Cressault, Alain Gleizes, Xiaohua Wang, Feng Chen, Hao Zheng

Abstract

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–Hückel corrections are both taken into account. The influences of condensed phases, Debye–Hückel 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.