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Thermodynamic activity of magnesium in several highly-solvating liquid alloys

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Abstract

An emf technique is reported using porous alumina tubes to contain reference metals and alloys in a molten salt electrolyte. Data are reported for the activity of magnesium and its temperature derivative in several liquid metal solvents. These include lead (650 °C), tin (800 °C), bismuth (850 °C), antimony (850 °C), and mixtures of tin and antimony (800 °). In all cases, the solvents show strong negative deviations from ideal thermodynamic behavior, due to the effects of strong solvation caused by the formation of intermetallic compounds. The extent of this effect is Pb < Sn < Bi < Sb. The data reported are useful in evaluating solvents for the possible carbothermic reduction of magnesium oxide.

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Authors and Affiliations

  1. University of Illinois, 61801, Urbana, IL

    Charles A. Eckert (Professor and Head of Chemical Engineering)

  2. Owens-Corning Fiberglass, Granville, OH

    Robert B. Irwin (Research Engineer)

  3. Amoco Oil Company, Texas City, TX

    Jeffery S. Smith (Operating Engineer)

Authors
  1. Charles A. Eckert
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  2. Robert B. Irwin
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  3. Jeffery S. Smith
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Additional information

Formerly a Chemical Engineering Graduate Student at the University of Illinois

Formerly a Chemical Engineering Graduate Student at the University of Illinois

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Eckert, C.A., Irwin, R.B. & Smith, J.S. Thermodynamic activity of magnesium in several highly-solvating liquid alloys. Metall Trans B 14, 451–458 (1983). https://doi.org/10.1007/BF02654364

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  • DOI: https://doi.org/10.1007/BF02654364

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