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Copper surface enrichment of AgCu alloys
Author(s) -
Lejček Pavel,
Kovač Janez,
Vaníčková Jaroslava,
Děd Jiří,
Samardžija Zoran,
Zalar Anton
Publication year - 2010
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.3170
Subject(s) - copper , x ray photoelectron spectroscopy , crystallite , annealing (glass) , chemistry , metallurgy , analytical chemistry (journal) , materials science , chemical engineering , environmental chemistry , engineering
We summarise the X‐ray electron spectroscopy (XPS) study of changing surface composition of polycrystalline Ag–2.2 mass% Cu and Ag–5.1 mass% Cu alloys during in situ annealing at chosen temperatures ranging from 300 to 600 °C. The results show obvious surface enrichment by copper, which is different for individual alloys. The contradiction of this result to general knowledge on preferential silver segregation can be explained on basis of attractive interaction of copper with oxygen and of accelerated diffusion of copper to the surface resulting in final copper surface enrichment. Copyright © 2010 John Wiley & Sons, Ltd.