CARBON ACTIVITY IN FE-BASED, CO-BASED, NI-BASED AND MN-BASED MELTS AT1873-K

A method to determine the first order interaction parameters epsilon(C )i according to the data of the influence of alloying elements upon th e carbon solubility in liquid metals has been developed. The calculate d results for iron based melts have been found to be in a good agreeme nt with literature data. The epsilon(c)i values obtained for Mn-, Fe-, Co- and Ni-based melts at 1873 K have been summarized in the series o f linear equations depending on the number of alloying element in the periodical system. Calculated metal activity in binary Me-C (Me = Mn, Fe, Co, Ni) melts shows good agreement with literature data.