Malan, Willem DutoitAkdogan, GuvenTaskinen, PekkaHamuyuni, JosephZietsman, Johannes Hendrik2018-12-142018-12Malan, W.D., Akdogan, G., Taskinen, P. et al. 2018, 'Phase equilibria and thermodynamic evaluation of the Ti-V-O system in air', Calphad, vol. 63, pp. 220-228.0364-5916 (print)1873-2984 (online)10.1016/j.calphad.2018.10.006http://hdl.handle.net/2263/68108The Ti-V-O system was studied experimentally from 700 °C to 1500 °C by high-temperature equilibration, quenching, scanning electron microscope and Energy-Dispersive X-Ray spectroscopy. The solubility of titanium in the slag is less than 3 mol% at 1500 °C and the vanadium solubility in the rutile phase reached a maximum of 7.8 mol% at 1400 °C. The thermodynamic evaluation was performed with FactSage 7.0. The solubility of vanadium in the rutile phase was developed within the framework of the compound energy formalism. The properties of the liquid phase were described with the quasichemical model. A set of self-consistent thermodynamic parameters was estimated well within acceptable limits. The calculated phase diagram of the Ti-V-O system in air is presented and compared to experimental observations and other phase diagram data from literature.en© 2018 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Calphad. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Calphad, vol. 63, pp. 220-228, 2018. doi : 10.1016/j.calphad.2018.10.006.Phase diagramStatic experimentsThermodynamicsTi-V-O systemPhase equilibriaThermodynamic parameterThermodynamic evaluationStatic experimentsQuasi-chemical modelsHigh-temperature equilibrationX-ray spectroscopyEnergy dispersiveCompound energy formalismsCalculated phase diagramsVanadiumTitanium dioxideThermodynamic stabilitySolubilitySlagsScanning electron microscopy (SEM)Oxide mineralsEnergy dispersive spectroscopy (EDS)Engineering, built environment and information technology articles SDG-07SDG-07: Affordable and clean energyEngineering, built environment and information technology articles SDG-09SDG-09: Industry, innovation and infrastructureEngineering, built environment and information technology articles SDG-12SDG-12: Responsible consumption and productionEngineering, built environment and information technology articles SDG-13SDG-13: Climate actionPostprint Article