MATERIALS TRANSACTIONS, v. 49, No. 4, Page. 854-859
Abstract
Thermodynamic interactions of niobium and molybdenum on titanium in liquid iron were studied in the temperature range of 1873 similar to 1973 K by measuring the effects of niobium and molybdenum on the solubility product for TiN formation in liquid iron using the metal-nitride-gas equilibration technique. The experimental results were thermodynamically analyzed using Wagner's interaction parameter formalism to determine the first-order interaction parameters of niobium and molybdenum on titanium in liquid iron as 0.0495 +/- 0.0049 and 0.01 +/- 0.0026, respectively, at 1873 K. Temperature dependence of these parameters was also determined as follows.
e(Ti)(Nb) = 1160/T - 0.570, e(Ti)(Mo) = 0.01 (1873 similar to 1973 K).