Abstract
The equilibrium oxygen potentials of the two-phase equilibria Fe3O4/Fe1−xS, Co1−xS/Co3S4, Co3S4/CoS2, Co1−xS/CoO, and CoO/CoSO4 were measured as a function of temperature. A solid-state emf technique using calcia-stabilized zirconia (CSZ) solid electrolyte was used. These equilibria were studied atP SO2≃1 atm; the equilibrium Co1−xS/CoO was also studied atP SO2≃0.1 atm. Two emf cell designs were used for the measurements atP SO2≃1 atm andP SO2≃1 and 0.1 atm, respectively. The homogeneity range of FeS in equilibrium with Fe3O4 and that of Co1−xS in equilibrium with CoO at ∼ 1073 K andP SO2≃1 atm were measured by electron microprobe analysis.
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Musbah, O.A., Chang, Y.A. A solid-state EMF study of the Fe-S-O and Co-S-O ternary systems. Oxid Met 30, 329–343 (1988). https://doi.org/10.1007/BF00659004
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DOI: https://doi.org/10.1007/BF00659004