溶融MgCl<SUB>2</SUB>-KClおよびCaCl<SUB>2</SUB>-KCl系の超音波の吸収と伝播速度

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タイトル別名
  • Absorption and Velocity of Ultrasonic Waves in MgCl<SUB>2</SUB>-KCl and CaCl<SUB>2</SUB>-KCl Binary Systems
  • 溶融MgCl2-KClおよびCaCl2-KCl系の超音波の吸収と伝播速度
  • ヨウユウ MgCl2 KCl オヨビ CaCl2 KClケイ ノ チョウオンパ

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Absorption and velocity of ultrasonic waves in molten MgCl2-KCl and CaCl2-KCl mixtures have been measured by using the double-transducer pulse method. The results obtained are summarized as follows:<BR>The relation between the ultrasonic velocity and the experimental temperature can be represented by a straight line having a negative temperature gradient over the entire range of composition for these systems.<BR>Since the temperature dependences of the volume viscosity coefficient, ηB, and the ratio of volume and shear viscosity coefficients, ηB⁄ηs, are nearly equal to the values found in the organic liquids having associated properties, it is possible to assume that the absorption in excess of Stokes’ absorption is attributed to the existence of structural relaxation caused by a time lag in structural rearrangement.<BR>Variations of the volume viscosity coefficient, ηB, and the adiabatic compressibility, ηs, calculated from the measured sound velocity with composition can be explained by considering the change in the consitituents existing in the melt, and the present results are well supporting the presumption derived from the results of density and surface tension measurements which are reported in the previous papers.

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  • 日本金属学会誌

    日本金属学会誌 39 (7), 687-696, 1975

    公益社団法人 日本金属学会

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