PHASE DIAGRAM CALCULATION OF QUASI-BINARY SYSTEM Na3AlF6-K3AlF6
(Dept 301; General Research Institute for Non-ferrous Metals of Beijing; Beijing 100088)
Abstract: The quasi-binary system Na3AlF6-K3AlF6 was optimized based on CALPHAD technique using a computerized optimization procedure called PARROT included in Thermo-calculation. The two-sublattice model was used for the liquid phase in which K1+, Na1+ were taken as cation, and AlF as anion. The compound 2K3AlF6·Na3AlF6 was modeled as stoichiometric phase. The phase diagram was analyzed according to the assessed result.
Key words: aluminium electrolyte Na3AlF6-K3AlF6 system phase diagram calculation