Intrinsic Contact Angle and Contact Interaction between Liquid Silver and Solid Graphite

摘要

The intrinsic contact angle between liquid metal and a solid substrate is important for interpreting the contact interaction between them. However, the apparent contact angle revealed in a wetting test does not always coincide with the intrinsic angle. In this study, the intrinsic contact angle of liquid silver on monocrystalline and polycrystalline graphite substrates was investigated by means of a sessile drop method under a 10 percent H_2-Ar atmosphere at 1273 K. The intrinsic contact angles were estimated to be 124 deg for the monocrystalline (C surface) and. 127 deg for the polycrystalline.