Thermodynamics of Solid-Phase Exchange Reactions Limiting the Subsolidus Structure of the System MgO-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;-FeO-TiO&lt;sub&gt;2&lt;/sub&gt;

Borisenko, O.L.; Logvinkov, S. M.; Shabanova, G. N.; Myrgorod, Oksana

doi:10.4028/www.scientific.net/msf.1038.177

Cited by 8 publications

(3 citation statements)

References 10 publications

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“…For aluminates, the equation for the dependence of heat capacity on temperature СР = f(T) has the form [16,17,18,19,20,21,22,23] A graphical interpretation of the dependence of heat capacity on temperature is shown in fig. 1.…”

Section: Main Partmentioning

confidence: 99%

Barium Aluminates and the Study of their Basic Thermodynamic Data

Shabanova,

Myrgorod,

Pirohov

et al. 2023

MSF

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The article presents the results of studies of thermodynamically stable barium aluminates. A database of thermodynamic data has been created: enthalpies, entropies and coefficients of the heat capacity equation, necessary for the study of multicomponent systems, including barium aluminates. Since the basis of modern materials science is multicomponent systems, on their basis it is possible to create various combinations of phases in structural materials with a set of specified properties. Thus, modern thermodynamics is not a frozen science. It is known that the objects of research are expanding, where thermodynamic methods can be applied to study the area of high and low temperatures, the area of very low and high pressures. And new discoveries give birth to new areas of application of thermodynamics: thermodynamics of thermonuclear reactions, plasma thermodynamics, relativistic thermodynamics, thermodynamics of negative absolute temperatures, etc. And, finally, the methods of thermodynamic research themselves do not remain unchanged: the exergy method, the methods of thermodynamics of irreversible processes, etc. At present, the thermodynamic method of research is widely used in various fields of physics, chemistry, biology, and many other sciences and branches of technology. Being one of the most extensive areas of modern natural science, thermodynamics plays an important role in the system of knowledge necessary for an engineer of any specialty in his practical activities. Chemical thermodynamics, on the other hand, paid the greatest attention to the study of phase transitions and the properties of solutions, and in relation to chemical reactions it was limited mainly to determining their thermal effects. To some extent, this is due to the fact that it was these areas of chemical thermodynamics that were the first to satisfy the needs of production. The practical use of known methods of thermodynamics of chemical reactions for solving major industrial problems for a long time lagged behind its capabilities.

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Section: Main Partmentioning

confidence: 99%

Barium Aluminates and the Study of their Basic Thermodynamic Data

Shabanova,

Myrgorod,

Pirohov

et al. 2023

MSF

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“…The study of ternary compounds of the CaO-BaO-Al2O3 system is of undoubted interest, since alkaline earth element aluminates [9,10] are widely used in various fields of technology.…”

Section: Introductionmentioning

confidence: 99%

On the Existence of Ternary Compounds in the CaO-BaO-Al<sub>2</sub>O<sub>3</sub> System

Shabanova,

Taranenkova,

Myrgorod

et al. 2023

MSF

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In this article in order to verify the probability of the formation of the compound CaBaAl4O8, a thermodynamic analysis of the following possible solid-phase reactions of its formation was carried out: formation of CaBaAl4O8 from the initial components - calcium carbon dioxide, barium carbon dioxide and aluminum oxide; the probability of formation of dual compounds CaAl2O4 and BaAl2O4 from the same raw materials (since the compound CaBaAl4O8 is located on the BaAl2O4-CaAl2O4 conjugate) and the possibility of formation of the compound CaBaAl4O8 from binary compounds CaAl2O4 and BaAl2O4. As a result of our experimental studies, the existence of ternary compounds Вa3CaAl2O7 and ВaCa2Al8O15 was confirmed, and it was found that the Вa3CaAl2O7 compound exists in the system at least up to a temperature of 1400 °C. Thus, our studies have determined an increase in the temperature limits of its existence, in contrast to the data of previous researchers, who indicated 1250 °C as the upper temperature of existence of Вa3CaAl2O7.

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“…This article is devoted to the test of the subsolidus structure of the four-component system MgO -Al 2 O 3 -FeO -TiO 2 . For clarity, the study of the system, its tetrahedration, which is described in detail in the publication, 13 will be presented in the form of figures (Fig. 1,3,5,7,9,11).…”

Section: Introductionmentioning

confidence: 99%

Subsolidus Structure of the MgO – Al2O3 – FeO – TiO2 system

Borysenko¹,

Logvinkov²,

Shabanova³

et al. 2022

ChChT

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The subsolidus structure of the four-component system MgO – Al2O3 – FeO – TiO2 was studied in six temperature ranges. Geometric-topological characteristics of the phases of the system under study have been determined, topological graphs of the relationship of elementary tetrahedrons have been constructed, their volumes, degrees of asymmetry for all temperature ranges have been found. The optimal regions of compositions for the production of spinel-containing materials have been predicted, which are within the limits of elementary tetrahedra: MgO – FeO – Mg2TiO4 – MgAl2O4, FeAl2O4 – Mg2TiO4 – FeO – Fe2TiO4, FeAl2O4 – Mg2TiO4 – MgAl2O4 – FeO and FeAl2O4 – MgTiO3 – MgAl2O4 – Al2O3.

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Thermodynamics of Solid-Phase Exchange Reactions Limiting the Subsolidus Structure of the System MgO-Al<sub>2</sub>O<sub>3</sub>-FeO-TiO<sub>2</sub>

Cited by 8 publications

References 10 publications

Barium Aluminates and the Study of their Basic Thermodynamic Data

Barium Aluminates and the Study of their Basic Thermodynamic Data

On the Existence of Ternary Compounds in the CaO-BaO-Al<sub>2</sub>O<sub>3</sub> System

Subsolidus Structure of the MgO – Al2O3 – FeO – TiO2 system

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