Abstract
The equilibrium partial pressure of oxygen for a system containing coexisting NiCr2O4, Cr2O3, and Ni was determined at 1000 to 1300 K using the electrochemical technique. Yttria-stabilized zirconia was employed as a solid-state electrolyte in the open-circuit electromotive force (EMF) measurements. Results were compared to the reported data in the literature. The standard Gibbs energy of NiCr2O4 at 1000 to 1300 K was determined to be ΔG°f(NiCr2O4)=-1327.2+0.314T±2.874 (kJ/mole)
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Kung, SC. Gibbs energy of formation of nickel chromite. Metall Trans B 22, 673–675 (1991). https://doi.org/10.1007/BF02679023
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DOI: https://doi.org/10.1007/BF02679023