Activity of Oxygen in Model Nickel–Yttrium Melts at PAr = 0.1 MPa

—Instantaneous recording of the electromotive force and certified Celox II Standard sensors are used to study the activity of oxygen in Ni–O melts during their deoxidation with up to 0.2 wt % Y. The changes in a [O] in accordance with the deoxidizer concentrations are represented in the form of loga...

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Bibliographic Details
Published in:Russian metallurgy Metally 2022, Vol.2022 (12), p.1483-1487
Main Authors: Burtsev, V. T., Anuchkin, S. N.
Format: Article
Language:English
Subjects:
Aluminum
Chemistry and Materials Science
Deoxidizing
Electric potential
Electromotive forces
Materials Science
Melts
Metallic Materials
Nickel
Oxygen
Theory of Metallurgical Processes
Yttrium
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Summary:—Instantaneous recording of the electromotive force and certified Celox II Standard sensors are used to study the activity of oxygen in Ni–O melts during their deoxidation with up to 0.2 wt % Y. The changes in a [O] in accordance with the deoxidizer concentrations are represented in the form of logarithmic dependence, and a fivefold increase in the deoxidizing capacity of Y as compared to that of Al in the Ni–O melts is demonstrated for a deoxidizer concentration of 0.05 wt %. For the Ni–O–Al system (5 wt % Al) deoxidized with Y, an increase in its deoxidizing capacity and a decrease in a [O] by 1.6 times as compared to those for the binary system were found.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029522120096