Equilibrium surface segregation of silver to the low-index surfaces of a copper single crystal

✍ Scribed by Wang, J. Y.; du Plessis, J.; Terblans, J. J.; van Wyk, G. N.

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 160 KB
• Volume: 28
• Category: Article
• ISSN: 0142-2421
• DOI: 10.1002/(sici)1096-9918(199908)28:1<73::aid-sia621>3.0.co;2-e

✦ Synopsis

The equilibrium surface segregation of Ag to the low-index surfaces of Cu single crystals is presented. It is found that the close-packed surface of the (111) orientation allows a high interaction parameter resulting in a discontinuous transition in the surface concentration against temperature, as well as a step in the segregation kinetics. In contrast, the rougher surfaces of the ( 110) and (100) orientations yield smaller interaction parameter values and a smooth transition in surface coverage against temperature is observed.