Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Review
Evaluating Thermodynamic Parameters of Alloy Elements in Molten Iron-based Metal by EMF Method Using Oxygen Sensor
Masanori Suzuki
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2019 Volume 105 Issue 3 Pages 353-357

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Abstract

EMF (Electro-Motive Force) method using oxygen sensor has been widely applied for determining activity coefficient and interaction parameters between alloying elements through soluble oxygen activity in molten solute metal. This method is effective particularly for evaluating activity coefficient of a deoxidizing element in molten metal through oxygen potential measurement, where chemical equilibrium can be achieved between solid oxide consisting of the deoxidizing element, the deoxidizing element and oxygen soluble in molten metal. In this paper, evaluating procedure and several key points are reviewed in terms of EMF method to determine thermodynamic parameters, particularly activity coefficient and interaction parameters, of alloying elements in molten iron-based metal.

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© 2019 The Iron and Steel Institute of Japan
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