Thermophysical Properties of Materials

Speed of sound in binary molten mixtures of potassium halides

V. P. Stepanov<sup>ab

a</sup> Institute of High-Temperature Electrochemistry, RAS
^b Ural State University

Abstract: The speed of sound in binary molten $\rm KCl$–$\rm KBr$, $\rm KCl$–$\rm KI$, $\rm KBr$–$\rm KI$, $\rm KF$–$\rm KCl$, $\rm KF$–$\rm KBr$, and $\rm KF$–$\rm KI$ mixtures has been measured by the pulse-temporal method in wide temperature and composition ranges. The adiabatic compressibility and molecular speed of sound have been calculated based on the literature data on density. The results are analyzed from the point of view of structural transformation in ionic melts, which accompanies the mixing of salts with different ion sizes.

UDC: 541.1-143:534.2

Received: 02.04.2019
Revised: 20.06.2019
Accepted: 20.06.2019

DOI: 10.1134/S0040364419060152

 English version: High Temperature, 2019, 57:6, 842–847

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