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

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

Research output: Contribution to journalArticleAcademicpeer-review

50 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
JournalSurface Science
Volume47
Issue number1
DOIs
Publication statusPublished - 1975

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