Thermodynamic assessment of the Co–V and Co–V–C system

• Published in: Journal of alloys and compounds Vol. 385; no. 1-2; pp. 114 - 118
• Main Authors: Huang, Shuigen, Li, Lin, Biest, Omer Van der, Vleugels, Jef
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 28.12.2004; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Co–V–C; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Phase diagram calculation; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Physics; Thermal properties of condensed matter; Thermodynamics; Thermodynamics; Co–V–C; Phase diagram calculation; Liquid state; Phase diagrams; FCC lattices; Liquidus; Co-V-C; Optimization; Ordered systems; Thermodynamic model; Isothermal section; Graphite; Thermodynamic properties
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2004.04.131

The phase diagram of the Co–V system has been evaluated using thermodynamic models for the Gibbs energy of the individual phases including liquid, fcc, bcc, sigma, Co3M, and CoM3. The optimization is performed by coupling the experimental and thermo-chemical data with thermodynamic parameters. Combining the thermodynamic properties of the Co–C and V–C lower-order systems available in literature with the assessed Co–V system allowed to calculate the isothermal section at 1300 and 1500°C and liquidus projection of the Co–V–C system. The lowest eutectic point is calculated at 1229°C with composition 1.168at.% C, 42.54at.% V and the other eutectic reaction, liquid ↔ fcc + VC + graphite, is at 1309°C at a composition of 12.06at.% C, 1.425at.% V.