Surface enrichment in copper-gold (Cu3Au and Au3Cu) alloys

R.A. Santen, van, L.H. Toneman

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    52 Citations (Scopus)
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    Abstract

    For homogeneous alloys, 2 theories of surface enrichment are available. One is based on the regular soln. model of liqs., neglects lattice strain effects, and predicts surface enrichment with the component having the lowest heat of atomization. The 2nd theory, which concs. on differences in at. radii and is often used to compute grain boundary segregation, predicts enrichment with the atom having the largest radius. Auger electron spectroscopy results are reported for Au3Cu and AuCu3, for which the 2 theories predict opposite surface enrichments. The opposite effects due to strain and heats of atomization just cancel
    Original languageEnglish
    Pages (from-to)64-76
    Number of pages12
    JournalSurface Science
    Volume47
    Issue number1
    DOIs
    Publication statusPublished - 1975

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