High-temperature wettability of aluminum nitride during liquid metal infiltration

The high-temperature wettability of AlN particle preforms with pure molten Cu, Al and Pb is quantified by means of drainage curves measured during pressure infiltration. By integrating the drainage curves obtained in this study, the work of immersion for each system can be estimated, allowing in turn to deduce an apparent contact angle for wetting of AlN by these metals. The influence of system nature and temperature on the apparent contact angle are studied and discussed by comparison with literature values measured using the sessile drop method.