Abstract
The interfacial energies between solid oxide ceramic and liquid metals have been investigated for a number of systems. At the metal melting point: (1) the interfacial energies between a given oxide ceramic and various metals vary by less than 10%:γ SL=2.538±0.139 J/m2 for Al2O3-liquid metals;γ SL=1.599+0.064 J/m2 for ZrO2-liquid metals;γ SL=1.676±0.142 J/m2 for UO2-liquid metals; (2) the respective contact angles (Φ>90°) idicate 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.
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