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• W3217772659 abstract "Phase diagram of the ternary oxide system FeO - SrO -Al 2 O 3 was constructed for the first time. In this system, the following compounds can be formed: hercynite FeAl 2 O 4 and five strontium aluminates - Sr 4 Al 2 O 7 , Sr 3 Al 2 O 6 , SrAl 2 O 4 , SrAl 4 O 7 , SrAl 12 O 19 . According to the calculations performed, solid solutions of oxides are not formed in the system, as it is confirmed by the literature data. In the course of modeling, the optimal energy parameters of the theory of subregular ionic solutions were selected for the components of the oxide melt (FeO, SrO, Al 2 O 3 ). Thermodynamic analysis of strontium deoxidizing ability in liquid iron at presence of aluminum was carried out using the technique for constructing the surface of solubility of strontium and aluminum in metal for steelmaking temperatures (1550 and 1600 °C) and carbon concentrations of 0.1 and 0.4 %. The equilibrium constants of the reactions of formation of strontium aluminates Sr 3 Al 2 O 6 and SrAl 2 O 4 from the components of the metal melt were calculated for the temperature range of 1550 - 1650 °C. It was found that the rest of strontium aluminates can be formed in liquid metal only at temperatures above 1750 °C. The base of thermodynamic data for the studied systems is given: temperature dependences of equilibrium constants for reactions occurring between components; values of interaction parameters of the first order (according to Wagner) for elements in liquid iron; values of energy parameters of the theory of subregular ionic solutions (for oxide melt). It follows from the calculations that the formation of strontium monoaluminate SrAl 2 O 4 and corundum Al 2 O 3 is most probable as the interaction products in Fe -Al - Sr - O and Fe -Al - Sr - C - O systems." @default.
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• W3217772659 date "2021-11-24" @default.
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• W3217772659 title "Thermodynamic analysis of strontium deoxidizing ability in liquid iron at presence of aluminum" @default.
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