Abstract
A thermodynamic analysis of the oxygen solutions in carbon-containing Fe, Fe–70% Ni, and Ni melts is performed. The equilibrium constants of the reaction of carbon with oxygen, the activity coefficients at infinite dilution, and the interaction parameters for the melts are determined at 1873 K. The dependences of the oxygen solubility in the melts on the carbon content are calculated. The oxygen concentrations in the Fe and Ni melts with the same carbon content differ by almost two orders of magnitude. The CO and CO2 gaseous oxides are the products of carbon deoxidation. A decrease in the gas pressure substantially increases the deoxidation ability of carbon. The oxygen solubility in the Fe–70% Ni melt with different carbon contents is studied experimentally. The experimental results adequately agree with the calculated data.
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This study was performed in terms of state assignment no. 075-00715-22-00.
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Translated by N. Kolchugina
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Aleksandrov, A.A., Kanevskii, A.G. Effect of Carbon on the Oxygen Solubility in an Fe–70% Ni Melt. Russ. Metall. 2022, 488–495 (2022). https://doi.org/10.1134/S0036029522050020
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DOI: https://doi.org/10.1134/S0036029522050020