Film-Induced Brittle Intergranular Cracking of Silver-Gold Alloys

F. Friedersdorf, Karl Sieradzki

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Dealloying of a binary noble alloy produces a porous layer rich in the more noble element. Application of a tensile load initiates a brittle intergranular (IG) crack in the dealloyed layer that advances into the unattacked material. This study showed that the crack penetration depth (Cd) is proportional to the thickness of the dealloyed layer (t). For a given value of t, the grain-boundary crack penetration distance was shown to decrease as the dealloying potential increased. The dependence of Cd on t and the dealloying potential as opposed to the applied potential at the time of fracture, supported the film-induced cleavage model.

Original languageEnglish (US)
Pages (from-to)331-336
Number of pages6
JournalCorrosion (Houston)
Volume52
Issue number5
DOIs
StatePublished - May 1996

Keywords

  • Dealloying
  • Film-induced cleavage
  • Film-induced cracking
  • Intergranular cracking
  • Selective dissolution
  • Stress corrosion cracking

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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