Thermodynamische Untersuchungen im System Gold—Cadmium, 2. Mitt.

Liquidus and solidus curves of the -AuCd phase were determined byDTA measurements. -AuCd has a congruent melting point of 629.5°C at 47 at% Cd with no signs of other minima or maxima in the liquidus curve between 43 and 51 at% Cd. Liquid and solid Au–Cd alloys were investigated by theemf method between 40 and 90 at% Cd and 653–973 K. A consistent set of integral thermodynamic data for liquid and for solid alloys of the entire Au–Cd system were calculated at 1000 and at 700K, resp., using values taken from the literature. Partial molar entropies of Cd of solid -AuCd and of liquid alloys in the same concentration range were compared and discussed with respect to ordering phenomena in solid and liquid alloys.

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