Abstract
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.
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