Article

Arhive, 2003, № 1

Thermophysical Properties of Materials

2003. V. 41. № 1. P. 23–31

Shpil'rain É.É., Savchenko V.A., Mozgovoi A.G., Skovorod'ko S.N.

Experimental investigation of the activity of sodium in a liquid sodium–potassium alloy in a wide temperature range

The EMF method is applied to investigate the activity of sodium in a molten sodium – potassium alloy containing $87.2$ wt. $\%$ of potassium. The measurements are performed in two different experimental setups. One of them uses glass containing sodium ions as electrolyte, and the other one uses beta-ceramics. Therefore, the limiting experimental temperature in the first case does not exceed $550$ K, while in the second case, it is about $750$ K. The maximal relative error of the experimental data on the activity of sodium in a liquid $\mathrm{Na}$–$\mathrm{K}$ alloy is approximately $3\%$. The discrepancy between the measurement results and the experimental and theoretical data available in the literature is within this error.

Article reference:
Shpil'rain É.É., Savchenko V.A., Mozgovoi A.G., Skovorod'ko S.N. Experimental investigation of the activity of sodium in a liquid sodium–potassium alloy in a wide temperature range, High Temp., 2003. V. 41. № 1. P. 23