TEMPERATURE-DEPENDENCE OF INTERFACIAL ENERGIES BETWEEN SOLID OXIDE CERAMICS AND LIQUID-METALS

The interfacial energies between oxide ceramic and liquid metals have been investigated for a number of systems. At the melting point: (1) the interfacial energies between a given oxide ceramic and various metals vary by less than 10%. (2) the respective contact angles (Φ>90°) indicate no wettability. Linear temperature functions of the interfacial energies in oxide ceramic-liquid metal systems have been derived. By extrapolation, temperature coefficients of interfacial energies can be estimated for oxide ceramic-liquid metal systems that have not yet been measured. The interfacial energies, together with the surface energies of the materials concerned, also provide the work of adhesion for all Al2O3- and ZrO2-liquid metal combinations considered.