Phase Equilibria in the System LiF–KI–KF–K2CrO4

Phase equilibria were experimentally studied in the system LiF–KI–KF–K 2 CrO 4 , which is the stable tetrahedron of the quaternary reciprocal system Li, K∥F, I, CrO 4 . Differential thermal analysis revealed the compositions and transformation temperatures at the eutectic point E □ 488 (L ⇄ LiF + KF...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2018-07, Vol.63 (7), p.950-961
Main Authors: Burchakov, A. V., Egorova, E. M., Kondratyuk, I. M., Moshchenskii, Yu. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Differential thermal analysis
Eutectic composition
Inorganic Chemistry
Lithium fluoride
Phase composition
Phase equilibria
Phase transitions
Physicochemical Analysis of Inorganic Systems
Potassium chromates
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Summary:Phase equilibria were experimentally studied in the system LiF–KI–KF–K 2 CrO 4 , which is the stable tetrahedron of the quaternary reciprocal system Li, K∥F, I, CrO 4 . Differential thermal analysis revealed the compositions and transformation temperatures at the eutectic point E □ 488 (L ⇄ LiF + KF + KI + α-K 2 CrO 4 ) and the peritectic point P □ 510 (L + K 3 FCrO 4 ⇄ KI + α-K 2 CrO 4 + KF). A computer model of the phase complex of the system was built, which can predict phase transformations at an arbitrary composition in the system. Isothermal sections of the systems were constructed, using which the phase composition at the temperature of the section can be calculated.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023618070033