Enthalpies of mixing of liquid alloys in the In-Pd-Sn system and the limiting binary systems |
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Authors: | Christoph Luef Hans Flandorfer Herbert Ipser |
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Institution: | Institut für Anorganische Chemie, Universität Wien, Währingerstraße 42, A-1090 Wien, Austria |
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Abstract: | The partial and integral enthalpies of mixing of molten binary In-Pd (up to about 29 at.% Pd), In-Sn (entire compositional range) and Pd-Sn (up to about 53 at.% Pd) alloys were determined at 900 °C. A Calvet-type microcalorimeter was used for the measurements employing a drop calorimetric technique. Additionally, five sections in the ternary In-Pd-Sn system (compositions up to about 40 at.% Pd) were investigated at 900 °C. The ternary interaction parameters were fitted using the Redlich-Kister-Muggiano model for substitutional solutions. The isoenthalpy curves for In-Pd-Sn at 900 °C were constructed for the integral molar enthalpy of mixing. Furthermore, the experimental results in the ternary system were compared with calculated values obtained by employing different binary extrapolation models. |
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Keywords: | Calorimetry Enthalpy of mixing In-Pd In-Sn Pd-Sn In-Pd-Sn |
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