Chemical activities and contents of dissolved components in Cu-base melts

Thermodynamic relationships in Cu-based melts have been represented using a modified epsilon formalism. nle calculational work is dedicated to the act ivities of components in binary, Cu-X solutions (X=Sn, Zn, Ni, Al, Si, Mn, Fe, Co, Zr, S, O, and H), to the equlibrium constants KmMe-nO for the forma tion reactions m[Me](Cu) + n[O](Cu)=MemOn (Me=Fe, Ni and Co) and to the act ivity coefficients of oxygen and hydrogen dissolved in Cu-O-X and Cu-H-X.