Abstract
A thermodynamic analysis of the oxygen solutions in the aluminum-containing Ni–Co melts has been performed. The equilibrium constants of reactions of aluminum deoxidation of nickel-cobalt melts, the activity coefficients at infinite dilution, and the interaction parameters for the melts differing in composition at 1873 K have been determined for the first time. The dependences of the oxygen solubility on the cobalt and aluminum contents in the melts are calculated. The deoxidizing capacity of aluminum slightly varies as the cobalt content in a melt increases to 20%; at higher cobalt contents in the melts, it increases substantially. The aluminum contents at the minima in the oxygen solubility curves and the oxygen contents corresponding to the aluminum contents have been determined.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
F. Ishii and S. Banya, “Equilibrium between aluminum and oxygen in liquid nickel and nickel–iron alloy,” Tetsu to Hagane 81 (1), 22–27 (1995).
G. K. Sigworth, J. F. Elliott, G. Vaughn, and G. H. Geiger, “The thermodynamics of dilute liquid nickel alloys,” Met. Soc. CIM Ann. V, 104–110 (1977).
G. K. Sigworth and J. F. Elliott, “The thermodynamics of dilute liquid cobalt alloys,” Canadian Metall. Quarterly 15 (2), 123–127 (1976).
I. S. Kulikov, Deoxidation of Metals (Metallurgiya, Moscow, 1975).
V. Ya. Dashevskii, N. N. Makarova, K. V. Grigorovich, et al., “Deoxidation equilibrium of aluminum and silicon in the liquid iron–nickel alloys,” ISIJ International 45 (1), 8–11 (2005).
A. A. Aleksandrov and V. Ya. Dashevskii, “Thermodynamics of the oxygen solutions in aluminum-containing Fe–Co melts,” Russian Metall., No. 3, 185–190 (2014).
A. A. Aleksandrov and V. Ya. Dashevskii, “Thermodynamics of the oxygen solutions in chromium-containing Ni–Co melts,” Russian Metall. (Metally), No. 7, 642–648 (2016).
M. G. Frohberg and M. Wang, “Thermodynamic properties of sulfur in liquid copper–antimony alloys at 1473 K,” Z. Metallkd. 81 (7), 513–518 (1990).
L. N. Belyanchikov, “Universal method for recalculating interaction parameters of elements in changing the matrix of alloys using the quasi-regular solution theory. II. Estimating the interaction parameters of elements in nickel–based alloys,” Elecktrometallurgiya, No. 2, 29–38 (2009).
L. N. Belyanchikov, “Estimating the interaction parameters, activity coefficients, and heats of solution of elements in cobalt–based alloys by recalculating their magnitudes for iron alloys,” Elecktrometallurgiya, No. 4, 16–22 (2009).
O. Kubashewski and K. B. Alcock Metallurgical Thermochemistry (Pergamon Press, Oxford, 1979).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.A. Aleksandrov, V.Ya. Dashevskii, L.I. Leont’ev, 2017, published in Metally, 2017, No. 4, pp. 58–62.
Rights and permissions
About this article
Cite this article
Aleksandrov, A.A., Dashevskii, V.Y. & Leont’ev, L.I. Thermodynamics of the oxygen solutions in the aluminum-containing Ni–Co melts. Russ. Metall. 2017, 590–593 (2017). https://doi.org/10.1134/S0036029517070023
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0036029517070023