溶融ZnCl2-MCl2(M=Cd, Pb, Sn, Ba)2成分系の粘性

江島 辰彦, 嶋影 和宣, 横尾 俊信, 中島 和隆, 武井 和彦

doi:10.2320/jinstmet1952.43.7_577

Viscosity coefficients of molten ZnCl₂-MCl (M=Cd, Pb, Sn, Ba) binary systems have been measured by means of the rotating cylinder method on the ZnCl₂-rich side. The results obtained are summarized as follows: (1) Viscosity coefficient for each salt mixture decreases drastically with increasing MCl₂ content and temperature. The temperature dependence of viscosity coefficients exhibits non-Arrhenius behavior in the composition range of 0-about 30 mol%MCl₂ (0-about 10 mol%BaCl₂ for the ZnCl₂-BaCl₂ system). (2) Apparent activation energies for viscous flow in these binary systems decrease markedly with increasing MCl₂ content in the order of CdCl₂<SnCl₂<PbCl₂<BaCl₂ in the composition range up to about 25 mol%MCl₂. (3) Isothermal viscosity coefficients and activation energies of the molten ZnCl₂-SnCl₂ system are larger than those of the molten ZnCl₂-PbCl₂ system in the composition range less than 25 mol%MCl₂, but their magnitudes reverse in the composition range of more than 25 mol%MCl₂. (4) The effect of each metallic cation on the destruction of molten ZnCl₂ polymer is explained on the basis of simple Førland’s model.

溶融ZnCl<SUB>2</SUB>-MCl<SUB>2</SUB>(M=Cd, Pb, Sn, Ba)2成分系の粘性

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