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Liquid-liquid interfacial tension measurements applied to molten Al-halide systems

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Abstract

After a brief review of the theory concerning the formation of a meniscus by a flat, vertical blade, the equipment and testing procedure used are described. The value of the interfacial tension between molten aluminium and flux (made of the equimolar mixture, NaCl-KCl) at 740° C isγ=792 dyn cm−1. The influence of the addition of various fluorides (NaF, KF, LiF, Na3AlF6) to the NaCl-KCl flux on the interfacial tension value between aluminium and flux was then studied. For a given molar fraction of salt addition, the interfacial tension decreases when the resulting effect increases in the following order: Na3AlF6<LiF<NaF<KF. The results obtained with the addition of Na3AlF6 and NaF match those obtained previously by Kurdyumovet al.

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Authors and Affiliations

  1. Université Scientifique et Médicale de Grenoble, ENSEEG-LTPCM, 38401, St Martin-d'Hères, France

    L. Martin-Garin

  2. Service Etudes Structurales - Aluminium Péchiney, Centre de Recherches de Voreppe, 38340, Voreppe, France

    A. Dinet & J. M. Hicter

Authors
  1. L. Martin-Garin
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  2. A. Dinet
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  3. J. M. Hicter
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Martin-Garin, L., Dinet, A. & Hicter, J.M. Liquid-liquid interfacial tension measurements applied to molten Al-halide systems. J Mater Sci 14, 2366–2372 (1979). https://doi.org/10.1007/BF00737025

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  • DOI: https://doi.org/10.1007/BF00737025

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