溶融珪酸塩とフルオロベリリウム酸塩の間の相応状態原理の成立とその応用

抄録

It was verified that in the complex ionic liquids of type AX-BX₂ such as alkali-fluoroberyllates or alkaliearth-silicates the corresponding-state principle is valid quantitatively under the following conditions: [A] between the following pairs, (i) LiF-BeF₂ and MgO-SiO₂, (ii) NaF-BeF₂ and CaO-SiO₂ and (iii) KF-BeF₂ and BaO-SiO₂, [B] in the composition region between 30 and 70 mol% in AX components, and [C] under the reduced absolute temperature scale with the factors 2.85 in the system (i), or 2.80 in the systems (ii) and (iii). Using the existing experimental data the following physical properties were confirmed to have the same values within experimental error in the corresponding states of both molten materials: (1) ionic packing density, (2) viscosity coefficient, and (3) equivalent conductivity. The liquid structure of both materials is also essentially the same in the corresponding state. Experimental work on molten fluoroberyllates is much easier than that on molten silicates due to the former’s lower melting points and applicability of a Ni-alloy (Hastelloy-N) container. The improvement of scientific understanding of molten fluoro-beryllates will ultimately contribute to the development of science and technology concerning not only molten fluoro-beryllates but also molten silicates.