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Volume 67, 1971
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Solid-liquid phase equilibria in the potassium + rubidium and the rubidium + caesium alloy systems

Abstract

Thermal methods were used to determine with high precision the solid-liquid phase equilibria diagram for the potassium + rubidium and the rubidium + caesium systems. Both form solid solutions of continuously varying composition with the minima in the liquidus curves occurring at 307.00 K and 0.667 mol fraction rubidium in the K + Rb system and 282.85 K and 0.530 mol fraction caesium in the Rb + Cs system. In the K + Rb system, the liquidus and solidus points are close together, giving a very narrow temperature range for the two phase region. The freezing point minimum in this system, occurring at 0.667 mol fraction Rb, suggests the possible formation of a KRb2 intermetallic compound.

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Article type: Paper
DOI: 10.1039/TF9716701612
Citation: Trans. Faraday Soc., 1971,67, 1612-1616
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    Solid-liquid phase equilibria in the potassium + rubidium and the rubidium + caesium alloy systems

    J. R. Goates, J. B. Ott and E. Delawarde, Trans. Faraday Soc., 1971, 67, 1612
    DOI: 10.1039/TF9716701612

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