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The influence of the ternary interaction parameter ε Fe-Bi on the activity of bismuth in molten copper

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Abstract

The first order ternary interaction parameter, ε Fe-Bi , for bismuth in molten copper has been evaluated using a pseudo equilibrium process. The results indicate that the interaction parameter can be represented by the following equation:

$$\varepsilon _{Bi}^{Fe} = \frac{{1.1 \cdot 10^6 }}{T}--750 (1398< T< 1469 K$$

The large positive value of ε Fe-Bi near the melting point temperature of copper is consistent with the three binary phase diagrams that bound the Cu-Fe-Bi ternary. The experimental results are used to calculate the isoactivity curves for each constituent in the copper-rich corner of the ternary system. The experimental results also indicate that the ternary interaction parameter strongly affects the activity curves as temperature is decreased.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, University of Arizona, 85721, Tucson, AZ

    X. H. Jiang (Research Assistant), D. C. Lynch (Professor) & W. G. Davenport (Professor)

Authors
  1. X. H. Jiang
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  2. D. C. Lynch
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  3. W. G. Davenport
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Jiang, X.H., Lynch, D.C. & Davenport, W.G. The influence of the ternary interaction parameter ε Fe-Bi on the activity of bismuth in molten copper. Metall Trans B 19, 427–432 (1988). https://doi.org/10.1007/BF02657740

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