Thermodynamic Activities of Components in Homogeneous Ni–Fe–S Mattes at 1473–1673 K

摘要: AbstractTwo techniques were used to measure sulfur partial pressures at Fe/Ni ratios of 0.25, 1 and 4 1473, 1573 1673 K. Gas mixtures H2 H2S equilibrated with liquid mattes then analysed a calibrated optical interferometer. In the other technique, determined along liquidus using dual-cell Knudsen effusion-mass spectrometer, against univariant Cu(1)–Cu2S(1) system. Where measurements overlapped, two gave results in excellent agreement each other.The p S2 data, together existing information, graphical Gibbs-Duhem integration obtairt iron nickel activities, relative solid elemental standard states, spanning complete composition range Fe-Ni-S system up X s = 0.5 between 1473