Surface Properties Of Liquid Alloys Research Articles

Thermodynamic and surface properties of liquid Co–Cr–Ni alloys

Direct measurements of bulk and surface properties of liquid alloys at elevated temperatures are often technically difficult or even impossible, and therefore, theoretical models can be used to estimate missing property values. The energetics of mixing in liquid Co–Cr, Cr–Ni and Co–Ni systems has been analysed through the study of the concentration dependence of various thermodynamic, surface (surface tension and surface composition) and structural properties (concentration fluctuations in the long-wavelength limit and chemical short-range order parameter) by the first or the Quasi-Chemical Approximation (QCA) for regular solutions, developed by Bhatia and Singh, in the framework of statistical mechanical theory in conjunction with the Quasi-Lattice Theory (QLT). The results obtained for these binary systems have been extended to study the thermodynamics and surface properties of ternary Co–Cr–Ni liquid alloys.

Surface Properties of Liquid Alloys

Surface Properties of Liquid Alloys

Evaluation of Surface Properties of Liquid Alloys and Molten Salt Mixtures

Evaluation of Surface Properties of Liquid Alloys and Molten Salt Mixtures

The surface of liquid dilute metal alloys in vacuum

The authors report work-function measurements and Auger spectroscopy of liquid gallium-aluminium alloys which indicate that the surfaces of liquid dilute alloys can have an instability in vacuum less than ultra-high that is quite distinct from normal surface oxidation. The solute (aluminium) continuously diffuses to the surface where it oxidises to form an insoluble oxide. Even in very dilute liquid alloys the surface eventually becomes covered in a layer of the oxidised solute, so the surface properties are unlike those of either the solute metal or its oxide. This may explain some anomalies that have been obtained in the surface properties of liquid alloys.