THERMODYNAMICS OF LIQUID TERNARY FEXNIXCO1-2X ALLOYS BY COMPUTER-AIDED KNUDSEN CELL MASS-SPECTROMETRY

Thermodynamic investigations on liquid ternary FexNixCo1-2x alloys hav e been performed by means of the computer-aided Knudsen cell mass spec trometry. The 'digital intensity-ratio' (DIR) method has been applied for the evaluation of the thermodynamic mixing functions. Ternary ther modynamically adapted power (TAP) series have been used for the algebr aic representation of the thermodynamic excess properties. The values of the molar heats of mixing, H(E), of the molar excess entropies, S(E ), and of the molar excess Gibbs energies, G(E), along a section with constant ratio of the mole fractions x(Ni)/x(Fe) = 1 at 1850 K are pre sented.