Journal
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
Volume 56, Issue -, Pages 29-40Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.calphad.2016.11.005
Keywords
Bronze; Thermodynamic modeling; CALPHAD; V2O5-CaV2O5, CaO-V2O5-VO2
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Funding
- Thermo-Calc Software AB, Sweden
- Swedish Steel Producers Association (Jernkontoret) through Hugo Carlssons Stiftelse
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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.
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