ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Measurement of Interaction Parameter between Cu and Al in Molten High Al Steel
Kengo SugiyamaShigeru UedaXu GaoSunjoong KimShin-ya Kitamura
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2017 Volume 57 Issue 4 Pages 625-629

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Abstract

The interaction parameter between Cu and Al in molten iron containing high levels of Al was measured using a chemical equilibrium technique. A molten Fe–Al alloy was equilibrated with a molten Ag–Cu alloy in an Al2O3 crucible at 1823 K. The activity coefficient of Cu in Fe–Al alloys was measured to be −2.33 while varying the concentration of Al in a range from 0.04–0.2 mol%. The influence of Cu on the deoxidation equilibrium of Al and O was estimated using the above interaction parameter. The results indicate that under a constant Al concentration, a contamination of several percent of Cu raises the O concentration in high Al steel.

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© 2017 by The Iron and Steel Institute of Japan
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