Abstract
In spite of the difference in nature of cohesive bonds in metals and ceramics, the interfacial bond between liquid metal and iono-covalent oxide is chemical in nature. This is demonstrated experimentally through studies on wettability and on work of adhesion in liquid metal/Al2O3 non-reactive systems, and thermodynamic considerations. The influence of oxygen and metallic additions to the metal on the wettability of these oxides is then presented. In reactive systems, wettability and work of adhesion can be drastically modified by the reaction product and the flux of the species through the solid-liquid interface. Thermodynamic analysis is able to explain the experimental results on the wettability and to predict the behaviour of reactive systems knowing the nature of the cohesive forces of the solid under the liquid.
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