Investigation of dealloying in Au-Ag thin films by quantitative electron probe microanalysis

X. Lu, E. Bischoff, R. Spolenak, T. J. Balk

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


Dealloying of Au-Ag films has been investigated by quantitative electron probe microanalysis and scanning electron microscopy. For film compositions greater than 44 at.% Au, dissolution of Ag is limited, with individual pores distributed randomly on the surface. Dealloying is enhanced as the initial Au content decreases below 44 at.%. The dealloying threshold, or parting limit, below which the fully nanoporous structure evolves, is 35 at.% Au. Dealloying also causes a slight decrease in film thickness, which is readily measured using the technique discussed here.

Original languageEnglish
Pages (from-to)557-560
Number of pages4
JournalScripta Materialia
Issue number7
StatePublished - Apr 2007

Bibliographical note

Funding Information:
The authors thank Mr. R. Völker for thin film deposition and Mrs. S. Kühnemman for SEM examination. X.L. expresses thanks to the Chinese Scholarship Council for financial support during his stay in Stuttgart.


  • Dealloy
  • Gold
  • Nanoporous
  • Thin film

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys


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