The Paton Welding Journal, 2021, №09



2021 №09 (06)

DOI of Article 10.37434/tpwj2021.09.07

2021 №09 (08)

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The Paton Welding Journal, 2021, #9, 44-48 pages

Chemical equilibrium in Fe–O–H system at high temperatures

M.M. Gasik¹ and M.I. Gasik²

¹Aalto University 00076, Aalto, Espoo, Finland. E-mail: michael.gasik@aalto.fi
²National Metallurgical Academy of Ukraine 4 Gagarin Prosp., 49000, Dnipro, Ukraine

Abstract
The issue of thermodynamic equilibrium in Fe–O–H system at the temperature of steel-making processes (1600 °C) was considered. The historical data array, features of experiments on obtaining them and their drawbacks were analyzed. A new more correct calculation of hydrogen and oxygen concentration in liquid iron and in the gas phase was performed. New coefficients of activity were calculated, proceeding from precise thermodynamic principles, unlike the earlier used artificial models based on interaction parameters. 19 Ref., 6 Figures.
Keywords: thermodynamics; iron, hydrogen; oxygen; solutions; activity; equilibrium

Received 26.04.2021

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