The cadmium vapor pressure above a binary alloy with silver (16.97-85.27 at. percent Cd) at T = 823-1148 K) is determined by the boiling-point method. The partial and integral thermodynamic characteristics of the vapor and condensed phases are estimated in the form of temperature-concentration curves. The system is characterized by negative deviation from the ideal-solution law. Extrapolation of the vapor-pressure curves for the components to high temperatures permits the identification of the limit on liquid-vapor phase transition, which may be added to the Ag-Cd phase diagram. The region of alloy-vapor interaction sets an upper bound on the relatively small area where liquid Ag-Cd alloys may exist.
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