Isothermal methods of investigation of quinary systems and advantages of use of the translation method for investigation of quinary water–salt systems were discussed. Two quinary systems—Li, Na, K//CO₃, B₄O₇–H₂O and Na, K//Br, SO₄, B₄O₇–H₂O—were investigated by means of the translation method at 15 and 25 °C, respectively. The comparison showed a good agreement between our results and the available literature data. There are 4 points, 13 curves, and 15 fields saturated with 4, 3, and 2 different equilibrium solid phases, respectively, in Li, Na, K//CO₃, B₄O₇–H₂O systems at 15 °C. The quinary Na, K//Br, SO₄, B₄O₇–H₂O system at 25 °C involves 5 invariant points, 16 monovariant curves, and 18 divariant fields saturated with 4, 3, and 2 different equilibrium solid phases, respectively. The total phase equilibria diagrams of both of the quinary systems were constructed on the basis of obtained data. The obtained diagrams were fragmented into divariant cocrystallization fields saturated with two different equilibrium solid phases. The trivariant crystallization volumes, which reflect the structures of Jänecke dry-salt phase diagrams of the systems saturated with the relevant phases, were also extracted.

中文翻译：

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五元水盐系统中相平衡的研究

讨论了等温研究五元体系的方法以及使用平移法研究五重水盐体系的优势。通过平移法研究了Li，Na，K // CO ₃，B ₄ O ₇ -H ₂ O和Na，K // Br，SO ₄，B ₄ O ₇ -H ₂ O这两个五元体系。分别在15和25°C下。比较表明我们的结果与现有文献数据之间有很好的一致性。Li，Na，K // CO ₃，B ₄ O _7中分别有4个点，13个曲线和15个场，分别被4、3和2个不同的平衡固相饱和。– H ₂ O系统在15°C下。25°C时的五元Na，K // Br，SO ₄，B ₄ O ₇ -H ₂ O系统涉及5个不变点，16个单变量曲线和18个由4、3和2个不同的平衡固相饱和的场。 ， 分别。在获得的数据的基础上，构建了两个五元体系的总相平衡图。所获得的图被分成两个不同的平衡固相饱和的二元共结晶场。还提取了反映了相关相饱和系统的Jänecke干盐相图结构的三变量结晶体积。