Assessment of Calcium-Oxygen Equilibrium in Liquid Iron.

Abstract

The first-order (ega) and the second-order ( Interaction Parameters betweenCalcium and Oxygen 2.1. Reciprocal and Conversion RelationshipsThe following reciprocal relationships among interaction parameters were derived by Lupis and Elliott,i6) p~,i+8J!=2p;+8:where 8~a nd +10gKc* """--"""""""""""""""-""',. The values for e~l7) and ac*018) used in this study are summarized in Table I and Fig. l

Computer Applications of Thermodynamic Databases to Inclusion Engineering

“…Several authors 13,14,[19][20][21][22] have attempted to model the Ca deoxidation curve using the classical Wagner formalism without considering the formation of associates. Very large negative temperature-dependent first-and second-order interaction parameters e Ca O , r Ca O , r Ca Ca,O were required.…”

Deoxidation Equilibrium of Chromium Stainless Steel with Si at the Temperatures from 1823 to 1923 K.

“…The complex deoxidation of liquid iron with silicon-aluminum was studied by Fujisawa et al, 2) but there is no report on the complex deoxidation of iron-high chromium alloys with silicon-aluminum. In metallurgical research of several decades, many studies have been reported on the thermodynamics of iron-chromium-oxygen [3][4][5][6] and ironaluminum-oxygen 3,[7][8][9] systems. Recently, one of present authors 10,11) has published assessment of thermodynamic values on above two systems in detail.…”

Calcium and Magnesium Deoxidation in Fe-Ni and Fe-Cr Alloys Equilibrated with CaO-Al2O3 and CaO-Al2O3-MgO Slags

“…(5) to (8) are given in the previous articles. 7,9,10) It is assumed as a first approximation that the values of interaction coefficients between Ca and O depend on the Ca and O contents and are obtained by using Eqs. (5) to (8).…”