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Determination of oxygen activity in gallium-antimony liquid solutions

Bestimmung der Sauerstoffaktivität in flüssigen Gallium-Antimon-Lösungen

  • Anorganische Und Physikalische Chemie
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Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Abstract

The activity of oxygen occuring at low concentrations in liquid Ga-Sb solutions was studied by means of the galvanic cell with zirconia solid electrolyte: W,O in Ga-Sb | ZrO2 + CaO | air, Pt. The coulometric titration technique was employed. The activity coefficient of oxygen was determined over the whole composition range as a function of temperature in the interval 1 123 K – 1 223 K. From the experimental resultsWagner's parameterh was deduced as:h GaSb=7 730J/g atom O. Values of oxygen activity coefficients in ternary gallium-indium-antimony alloys were predicted.

Zusammenfassung

Es wurde die Aktivität des in flüssigen Ga - Sb-Lösungen in niedrigen Konzentrationen anwesenden Sauerstoffe mittels einer galvanischen Zelle mit festem Elektrolyt: W,O in Ga - Sb|ZrO2 + CaO| Luft, Pt untersucht. Als Elektrolyt wurde mit Calciumoxid stabilisiertes Zirkoniumoxid benutzt. Es wurde dabei die coulometrische Titrierung angewendet. Der Aktivitätskoeffizient von Sauerstoff wurde als Funktion der Temperatur in einem Bereich von 0 bis 100 At% Sb ermittelt. Auf Grund von experimentellen Daten wurde derWagnersche Parameter zuh=7 730J/g Atom O ermittelt. Die Werte der Sauerstoff-Aktivitätskoeffizienten in ternären Gallium-Indium-Antimon-Legierungen wurden berechnet.

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Authors and Affiliations

  1. Institute for Metals Research, Polish Academy of Sciences, PL-30-059, Kraków, Poland

    Jan Wypartowicz & Krzysztof Fitzner

Authors
  1. Jan Wypartowicz
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  2. Krzysztof Fitzner
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Dedicated to Prof. Dr.Kurt L. Komarek on the occasion of his 60th birthday.

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Wypartowicz, J., Fitzner, K. Determination of oxygen activity in gallium-antimony liquid solutions. Monatsh Chem 119, 301–309 (1988). https://doi.org/10.1007/BF00810255

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  • DOI: https://doi.org/10.1007/BF00810255

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