Refining sub-solidus phase relations in the systems CaO-RuO2-SiO2 and CaO-RuO2-V2O5

- Refined phase relations of the systems CaO-RuO2-SiO2 and CaO-RuO2-V2O5.
- Thermodynamic data for ternary oxides are used to compute the phase diagrams.
- No quaternary oxides are reported in these systems.
- Tie lines are identified by computing free energy change for exchange reactions.
- Stability of calcium ruthenates with SiO2 and V2O5 can be assessed from diagrams.