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Thermodynamic study of liquid Cu-Mg alloys by vapor pressure measurements

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An Erratum to this article was published on 01 July 1973

Abstract

Thermodynamic properties of liquid Cu-Mg alloys have been determined by magnesium vapor pressure measurements over pure liquid magnesium and liquid Cu-Mg alloys, in the composition range of 11 to 90 mole pct Mg between 845 and 1345 K, employing the transpiration technique. Based on the quadratic formalism suggested by Turkdogen and Darken for binary systems, analytical expressions have been derived representing integral and partial molar thermodynamic properties as functions of composition for the two terminal regions of suN Mg = 0 to 0.33 and 0.6 to 1.0. From the measured activity values of magnesium and copper, in the liquid alloys in equilibrium with solid intermetallic compounds, standard free energies of formation of Cu2Mg(s) and CuMg2(s) relative to pure solid components have been calculated and expressed as functions of temperature.

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Authors and Affiliations

  1. Bhabha Atomic Research Centre, Trombay, Bombay, India

    S. P. Garg (Scientific Officers, Metallurgy Division, and Head), Y. J. Bhatt (Scientific Officers, Metallurgy Division, and Head) & C. V. Sundaram (Scientific Officers, Metallurgy Division, and Head)

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  1. S. P. Garg
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  2. Y. J. Bhatt
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  3. C. V. Sundaram
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Extractive Metallurgy Section, Metallurgy Division

An erratum to this article is available at http://dx.doi.org/10.1007/BF02666212.

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Garg, S.P., Bhatt, Y.J. & Sundaram, C.V. Thermodynamic study of liquid Cu-Mg alloys by vapor pressure measurements. Metall Trans 4, 283–289 (1973). https://doi.org/10.1007/BF02649628

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