Carbon activity in Fe-, Co-, Ni- and Mn-based melts at 1873 K

A method to determine the first order interaction parameters according to the data of the influence of alloying elements upon the carbon solubility in liquid metals has been developed. The calculated results for iron based melts have been found to be in a good agreement with literature data. The values obtained for Mn-, Fe-, Co- and Ni-based melts at 1873 K have been summarized in the series of 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.