An assessment of the Ca-V-O system

作者：Yang Yang^*; Mao Huahai; Selleby Malin

来源：Calphad: Computer Coupling of Phase Diagrams and Thermochemistry , 2017, 56: 29-40.

DOI：10.1016/j.calphad.2016.11.005

• Bronze
• Thermodynamic modeling
• CALPHAD
• V2O5-CaV2O5, CaO-V2O5-VO2

The Ca-V-O system is studied with an emphasis on the following oxide sub-systems: CaO-V2O5, CaO-V2O3, V2O5-CaV2O5 and CaO-V2O5-VO2. The aim of the present assessment is to obtain a thermodynamic description of the Ca-V-O system. The compound energy formalism was used to describe the liquid by applying the ionic two-sublattice model and the beta-bronze phase CaxV2O5 (0.17 <= x <= 0.33) using a three-sublattice model. Phase equilibria and thermodynamic properties were critically evaluated using the CALPHAD approach and a consistent set of thermodynamic model parameters was obtained. Satisfactory agreement between calculated and experimental values is achieved.

• 出版日期2017-3