レビュー
酸素センサーを用いた起電力(EMF)法による溶鉄中添加元素の熱力学的評価
2019 年 105 巻 3 号 p. 353-357
詳細
2019 年 105 巻 3 号 p. 353-357
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.
