Preliminary communication

Assessment of dissociation rate of FeCr2O4 using the Bjerrum-Guggenheim coefficient

V. Tolokonnikova ; Chemical- Metallurgical Institute, Karaganda, Kazakhstan
S. Baisanov ; Chemical- Metallurgical Institute, Karaganda, Kazakhstan
G. Narikbayeva ; Chemical- Metallurgical Institute, Karaganda, Kazakhstan
I. Narikbayeva ; Chemical- Metallurgical Institute, Karaganda, Kazakhstan

Abstract

A calculation procedure of line positions of the monovariant phase equilibrium for the crystallization regions of a congruent compound using the osmotic coefficient of Bjerrum-Guggenheim (ɸ’ _{Am Bn}) was developed. The relevant mathematical apparatus for an analytical description of lines and surfaces of the phase crystallization was recommended. As an example of FeO-Cr₂O₃ oxide system, the assessment of dissociation rate of congruent compound of FeCr₂O₄ was performed. The demonstration material of behavior of the osmotic coefficient of Bjerrum-Guggenheim under boundary conditions as assessment criterion of melt structurewas presented.

Keywords

FeO-Cr₂O₃ system; phase diagrams; crystallization; dissociation rate; Bjerrum-Guggenheim coefficient

Hrčak ID:

256043

URI

https://hrcak.srce.hr/256043

Publication date:

1.7.2021.

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