Thermodynamic Properties of Carbon and Manganese in Mn-C and Mn-Fe-C Melts

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Carbon solubility in Mn-Fe melts (xMn=0.083-0.706,xFe=0.034-0.715) was measured experimentally at various temperatures.By thermodynamic derivation and calculation,the relationship between activity coefficient of carbon in infinite dilute solution of manganese in Mn-C system and temperature was obtained.Using Gibbs-Duhem relationship,the experimental results of this study,and experimental data obtained by strict thermodynamic derivation and calculation in references,the relationships between other thermodynamic properties (εCC,εCCC,εCFe,eεCCFe,and εCFeCFe) in Mn-Fe-C system and temperature were obtained.
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