Film-Induced Brittle Intergranular Cracking of Silver-Gold Alloys

F. Friedersdorf, Karl Sieradzki

Research output: Contribution to journalArticle

22 Citations (Scopus)

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
StatePublished - May 1996

Fingerprint

Gold Alloys
Silver alloys
Gold alloys
Cracks
Grain boundaries

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

Cite this

Film-Induced Brittle Intergranular Cracking of Silver-Gold Alloys. / Friedersdorf, F.; Sieradzki, Karl.

In: Corrosion (Houston), Vol. 52, No. 5, 05.1996, p. 331-336.

Research output: Contribution to journalArticle

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