Determination of Manganese and Carbon Activities of Mn-C Melts at 1628 K.

Thermodynamic Assessment of Liquid Mn-Fe-C System by Unified Interaction Parameter Model.

“…As mentioned above, the experimental technique employed by Katsnelson et al,1) Fenstad, 3) Kim et al, 4,5) and Saxena et al 7) presents the solution properties only as the ratio of g C to g Mn and requires additional information besides Eq. (2) in order to determine their individual values.…”

“…The interaction parameters are determined by correlating the above equations to the respective experimental data. The experimental data for the ratio of g C to g Mn in the Mn-C system were taken from the works of Katsnelson et al, 1) Fenstad, 3) and Kim et al 4,5) The data for the saturation of carbon in Mn melt were taken from the works of Katsnelson et al, 1) Fenstad, 3) Kim et al, 4,5) Turkdogan et al, 11,12) Schenck et al, 13) and Ni et al 14) Table 2 shows their experimentally determined solubility of carbon in Mn melt. The correlation to determine the interaction parameters, e CC and e CCC , requires a combination of the activity coefficient of carbon at saturation with that in infinite dilute solution of Mn.…”

“…The present study determines the activity coefficient of C at infinite dilute solution of Mn, ln g C°, by examining the behavior of the experimentally determined ratio of activity coefficient of C to that of Mn in a Mn-C melt. The data for the Mn-C binary system were taken from the works of Katsnelson et al 1) …”

“…[3][4][5] This report re-examines the available experimental data and proposes a representative model for the thermodynamic properties of the liquid Mn-Fe-C system. In addition to Katsnelson et al,1) Fenstad, 3) Kim et al, 4,5) and Saxena et al 7) examined the thermodynamic properties of the Mn-C and Mn-Fe-C systems using the same experimental technique used by Katsnelson et al When combined together, their works provide sufficient information to develop a solution model that adequately represents the thermodynamic properties of the Mn-Fe-C system. The experimental method that they adopted defines the solution properties only as the ratio of g C to g Mn , by virtue of Eq.…”

“…For example, Katsnelson et al 1) determined the compositions of Mn-C melt in equilibrium with Ar-CO gas under a condition of MnO saturation at 1 628 K, but the range of their investigated composition was limited from x C ϭ0.114 to 0.269. They assessed the experimental results according to the following reaction.…”