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Oxygen pressure measurements of silica saturated Fe-O-SiO2 melts by the emf method using zirconia solid electrolyte

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Abstract

The thermodynamic properties of silica-saturated iron silicate slags have been studied from oxygen partial pressure measurements using a solid electrolyte galvanic cell. The oxygen activity in molten silver bath equilibrated with iron silicate slags was determined by the following cell type, Pt, Ni-NiO/O=/slag-Ag(O), LaCrO3, Pt at temperatures between 1473 and 1573 K for the slags ranging in compositions from iron saturation to magnetite saturation. The oxygen partial pressures obtained in this investigation were in good agreement with those given by the previous study using the CO-CO2 gas equilibrium method. The data showed that the Fe+++/Fe++ ratio is proportional toP o 2 ¼

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Authors and Affiliations

  1. Department of Metallurgy, Kyoto University, 606, Kyoto, Japan

    Toshio Oishi (Research Associate), Katsutoshi Ono (Associate Professor) & Joichiro Moriyama (Professor Emeritus)

  2. Kobe Steel Company, 675, Kakogawa

    Tetsuya Goto

  3. Toyota Motors Company, 471, Toyota, Japan

    Yoshiro Kayahara

Authors
  1. Toshio Oishi
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  2. Tetsuya Goto
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  3. Yoshiro Kayahara
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  4. Katsutoshi Ono
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  5. Joichiro Moriyama
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Additional information

TETSUYA GOTO and YOSHIRO KAYAHARA, formerly Graduate Students, Kyoto University

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Oishi, T., Goto, T., Kayahara, Y. et al. Oxygen pressure measurements of silica saturated Fe-O-SiO2 melts by the emf method using zirconia solid electrolyte. Metall Trans B 13, 423–427 (1982). https://doi.org/10.1007/BF02667758

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  • DOI: https://doi.org/10.1007/BF02667758

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