Thermodynamic Studies of the Liquid Ni–Pd Alloys by Mass Spectrometric and Solid State EMF Measurements

Abstract

The activities and the partial molar heats of mixing were determined in the Ni-Pd system using a Knudsen cell and a quadrupole mass spectrometer. The activity of nickel in this system was measured by means of a zirconia solid oxide galvanic cell, Pt, air/ZrO2+CaO/Ni-Pd(1), NiO/Cr2O3 or LaCrO3, Pt. Although the activities of nickel obtained by the emf measurements showed slightly lower values over the entire composition range than those obtained by mass spectrometry, both results were in close agreement and exhibited negative deviations from Raoult's law. The activity coefficients of nickel and palladium at infinite dilution at 1833K were also determined.

Distribution of Precious Metals in Two Liquids Phase Separation of the Fe-Cu-C, Fe-Pb-C, Fe-Ag-C and Ni-Ag-C Systems with Carbon Saturation

“…γ Fe 1500 0.00627 27) 0.0387 23) 0.00466 22) 3.58 27) Cu 1500 4.23 27) 0.0274 27) 0.0604 27) 0.0780 24) Pb 1500 0.1056 27) 0.0209 27) 0.0692 22) 0.396 22) Ni 1700 No date 0.339 25) 0.0673 26) 0.909 27) Ag 1500 40.0 27) 0.142 27) 2.15 27) 0.393 22) 1700 25.9 27) 0.171 27) 1.97 27) 0.438 22) 環境資源工学…”