Experimental Investigation of the Pressure of Saturated Vapors of Liquid Alloys of Alkali Metals at High Temperatures: Na–Cs System

Abstract

The saturated vapor pressure of liquid potassium–cesium alloys of five compositions (15.0, 30.0, 50.0, 65.0, and 85.0 at. % Cs) is measured by the U-tube manometer method in the temperature range from 760 to 1289 K. The alloys are prepared by the weighing method at a fairly high purity of starting potassium and cesium (>99.99 wt % for each of the alkali metals). The confidential error of the experimental results is in the range from 1.0 to 1.5%. The approximating equations for the saturated vapor pressure of the investigated K–Cs alloys are derived from the statistical regression analysis of the experimental data.