2011 年 51 巻 5 号 p. 689-695
Temperature and compositional dependencies of ultrasonic velocities on molten alkali silicates have been reviewed. Although compositional correlation equations for the ultrasonic velocities on molten silicates have been previously proposed, the compositional dependency has not been interpreted yet from the viewpoint of the silicate structure. The authors focused on the ultrasonic velocities of molten alkali silicates, closely examined the reported data and have found that there is an identical linear relationship between the adiabatic compressibilities, which are strongly relevant to the ultrasonic velocities, and the molar volumes. This indicates that the molar volume is one of the most significant factors affecting the ultrasonic velocities.
