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Phase relationships in the system Cr W O and thermodynamic properties of CrWO4 and Cr2WO6

Jacob, KT (1980) Phase relationships in the system Cr W O and thermodynamic properties of CrWO4 and Cr2WO6. In: Journal of Materials Science, 15 (9). pp. 2167-2174.

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Abstract

The phase diagram of the Cr-W-O system at 1000° C was established by metallographic and X-ray identification of the phases present after equilibration in evacuated silica capsules. Two ternary oxide phases, CrWO4 and Cr2WO6 were detected. The oxygen potential over the three-phase mixtures, W+Cr2O3 s+CrWO4, WO2.90+CrWO4+Cr2WO6 and Cr2O3+CrWO4+Cr2WO6, were measured by solid state cells incorporating Y2O3 stabilized ZrO2 electrolyte and Ni+NiO reference electrode. The Gibbs' energies of formation of the two ternary phases can be represented by the following equations

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 01 Dec 2011 07:20
Last Modified: 01 Dec 2011 07:20
URI: http://eprints.iisc.ernet.in/id/eprint/42512

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