Equilibrium between Dissolved Mn and Ο in Molten High-Manganese Steel

This paper describes the equilibrium relation between dissolved manganese and oxygen in molten high-manganese steel equilibrated with solid MnO.The equilibrium constant of manganese deoxidation was obtained as follows, MnO(s) = Μη + Ο log^Mn = -Π 900/7+5.10(1823 Κ <T< 1923 K)The interaction parameter between Mn and Ο in liquid iron was independent of temperature and is given by e 0Mn = -0.037(mass % Mn < 24, 1823 K< Τ <1923 Κ).The interaction parameter formalism with only the first order parameter can represent the variation of the activity coefficient up to 24 mass % Mn in this system, when appropriate correction for a Mn o is applied.