발간논문

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Vol.25, No.5, 368 ~ 378, 1987
Title
Thermophysical Properties of Molten Salts
다쓰히꼬 에지마 Tatsuhiko Ejima
Abstract
By means of Brillouin scattering spectroscopy, hypersonic velocities in the NaNO₃-KNO₃binary melts have been measured at temperatures of the liquidus temperatures of the melts to 200k above them over the entire range of compositions. The light beam scattered by the melt is analyzed with a pressure scanned Fabry-Perot spectrometer. Hypersonic velocities obtained are about the same as the ultrasonic velocities reported at compositions being rich in NaNO₃, but are markedly larger than those at compositions being rich in KNO₃, indicating the occurrence of structural relaxation. Thermodynamic values such as adiabatic and isothermal compressibilities, constant volume heat capacity and internal pressure calculated from the sound velocity obtained show that the melt can be treated as a typical ionic liquid though the melt contains a certain amount of associated species.
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