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Thermodynamic studies of Zn-O interactions in dilute liquid copper alloys

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Abstract

The effect of Zn on the activity coefficient of oxygen in liquid copper at low concentrations has been determined using a solid electrolyte galvanic cell: (—) Pt, W/O (Cu-O-Zn), l//ZrO2-CaO//NiO-Ni/pt (+) The interaction parameter ε (Zn)o is found to be −256 at 1100°C, −203 at 1150°C, and −160 at 1200°C. From the results, the enthalpy and entropy interaction parameters have been evaluated. A comparative study of the solute interactions in Cu-O solutions containing Mn, Fe, Co, Ni, and Zn is made in the light of the solution models.

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Authors and Affiliations

  1. Department of Theoretical Metallurgy, Royal Institute of Technology, S-100 44 Stockholm 70, Sweden

    S. Seetharaman (Research Associate) & L. I. Staffansson (Professor)

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  1. S. Seetharaman
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  2. L. I. Staffansson
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Seetharaman, S., Staffansson, L.I. Thermodynamic studies of Zn-O interactions in dilute liquid copper alloys. Metall Trans B 10, 539–543 (1979). https://doi.org/10.1007/BF02662554

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