Metallurgical and Materials Transactions B

, Volume 2, Issue 12, pp 3299–3303 | Cite as

The thermodynamics of melts in the system VO2−V2O5

  • Hideaki Suito
  • D. R. Gaskell
Physical Chemistry


Using a gravimetric technique, the oxygen isobars in the liquid phase field of the system VO2−V2O5 have been determined in the temperature range 1020° to 1100°C and in the oxygen pressure range 0.01 to 0.4 atm, and the VO2 liquidus and solidus curves have been determined in the temperature range 953° to 1081°C. From these results have been calculated the activities of the components VO2 and VO2.5 in the system and the standard free energy change for the reaction 2VO2 (S)+1/2O2 (g)=V2O5 (1). The latter was determined to be ΔG o=−17780+7.64T in the temperature range 1020° to 1100°C.


Oxygen Isobar 
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Copyright information

© The Metallurgical Society of American Institute of Mining, Mitallurgical and Petroleum Engineers, Inc., and American Society for Metals 1971

Authors and Affiliations

  • Hideaki Suito
    • 1
  • D. R. Gaskell
    • 1
  1. 1.School of Metallurgy and Materials Science and Laboratory for Research on the Structure of MatterUniversity of PennsylvaniaPhiladelphia

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