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Activity coefficient of oxygen in copper-tellurium melts

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Abstract

Activity coefficient of oxygen, γo, in copper-tellurium melts was determined at 1423 K utilizing a modified coulometric titration technique with the following electrochemical cell: O in Cu-Te melts/ZrO2(+CaO)/air, Pt. The γo values in the vicinity ofN Te = 0.30 are much smaller than those in the tellurium-dilute copper-tellurium melts, and increase rapidly with the tellurium composition. The shape of the In γo vs solvent composition curve is quite similar to that in Cu-S and Tl-Te melts. This type of compositional dependence can be successfully described by a proposed solution model.

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Authors and Affiliations

  1. Department of Metallurgical Engineering, Faculty of Engineering, Osaka University, Yamadaoka 2-1, Suita-city, 565, Osaka, Japan

    Shinya Yao (Research Instructor) & Yoichi Kaku

  2. Nissan Motor Company Ltd., Zama-city, 228, Kanagawa, Japan

    Zensaku Kozuka (Professor)

Authors
  1. Shinya Yao
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  2. Yoichi Kaku
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  3. Zensaku Kozuka
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Formerly Graduate Student, Osaka University

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Yao, S., Kaku, Y. & Kozuka, Z. Activity coefficient of oxygen in copper-tellurium melts. Metall Trans B 17, 171–177 (1986). https://doi.org/10.1007/BF02670830

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  • DOI: https://doi.org/10.1007/BF02670830

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