Article ID Journal Published Year Pages File Type
1449438 Acta Materialia 2007 6 Pages PDF
Abstract

The equilibrium contact angles and spreading kinetics of Au–Ni droplets of azeotropic composition on ZrB2 substrates were measured by the dispensed drop technique in high vacuum. Experiments were performed at two temperatures, 980 and 1170 °C, leading to different interfacial reactivities, namely, simple substrate dissolution (1170 °C) and compound formation at the interface (980 °C). The contact angle of Au–Ni on unreacted ZrB2 is evaluated and related to the type of bonding established at metal/metal-like ceramic interfaces. The experimental results on reactive wetting are compared with predictions of two different approaches proposed recently in order to explain the thermodynamics and kinetics of this type of wetting.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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