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Russian Journal of Inorganic Chemistry

, Volume 64, Issue 7, pp 899–906 | Cite as

Partition of the Quaternary Reciprocal System Na,Rb||F,I,CrO4 and Investigation of the Stable Tetrahedron NaF–RbI–RbF–Rb2CrO4

  • A. V. BabenkoEmail author
  • E. M. Egorova
  • I. K. Garkushin
PHYSICOCHEMICAL ANALYSIS OF INORGANIC SYSTEMS
  • 2 Downloads

Abstract

The quaternary reciprocal system Na,Rb||F,I,CrO4 was studied, low-melting mixtures based on which are promising as fusible electrolytes for chemical current sources, heat-storage materials, and media for growing single crystals. The system was partitioned into simplexes using graph theory, and the tree of phases of the system was constructed. The tree of phases is linear and contains four stable tetrahedra sharing stable cutting triangles. The combined stable tetrahedron NaF–RbI–RbF–Rb2CrO4 was investigated by differential thermal analysis. The crystallization surface of this stable tetrahedron is represented by the volumes of sodium fluoride, rubidium iodide, rubidium fluoride, rubidium chromate, and the compound Rb3CrO4F. Monovariant equilibrium lines meet at two quaternary invariant points: eutectic E491 and peritectic P508.

Keywords:

phase equilibria differential thermal analysis invariant equilibrium eutectic peritectic 

Notes

FUNDING

This work was performed within the framework of the basic part of the state assignment for the Samara State Technical University, Samara, Russia (project no. 4.5534.2017/8.9).

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • A. V. Babenko
    • 1
    Email author
  • E. M. Egorova
    • 1
  • I. K. Garkushin
    • 1
  1. 1.Samara State Technical UniversitySamaraRussia

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