Abstract
The energy of the Pb{111}‖Al{111} interface has been determined by a solid-state wetting technique. Pb crystallites, 18 µm or less in size, were equilibrated on a monocrystalline Al{111} substrate at 590 K under ultrahigh vacuum conditions. Auger electron spectroscopy of the equilibrated sample showed that about 1.8 monolayers of Pb are adsorbed on the surface of the Al substrate, but that no Al is adsorbed on the Pb surface. The contact angle of Pb crystallites with the orientation relationship Pb{111}∥Al{111} was measured to be 27.3±0.8 deg. After correction of the Al surface energy for Pb adsorption, by means of the Gibbs adsorption isotherm, the Young equation was used to obtain an interfacial energy of 217±35 mJ m−2.
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Shi, Z., Lowekamp, J.B. & Wynblatt, P. Energy of the Pb{111}‖Al{111} interface. Metall Mater Trans A 33, 1003–1007 (2002). https://doi.org/10.1007/s11661-002-0201-7
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DOI: https://doi.org/10.1007/s11661-002-0201-7