The Pressure of Saturated Vapors of Liquid Alloys of Alkali Metals at High Temperatures: $\mathrm{Na}$–$\mathrm{Rb}$ System

The pressure of saturated vapors of a molten $\mathrm{Na}$–$\mathrm{Rb}$ system is calculated from the experimental data on the activity coefficients of the components of this system at temperatures of $773$ and $1073$ K in a wide range of its compositions available in the literature [1, 2]. The calculated values of the saturation pressure of liquid sodium-rubidium alloys are compared with the results of an experimental investigation of the $p_s$–$T_s$ dependence for a $\mathrm{Na}$–$\mathrm{Rb}$ alloy containing $60.78$ at. $\%\,\mathrm{Rb}$ [3].