Chaos during the Growth of an Artificial Pit

S. G. Corcoran, K. Sieradzki

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


The current vs. time behavior of a silver electrode in a one-dimensional artificial pit configuration was followed under potentiostatic control in 1M HCIO4. The current decay followed power law behavior in time, i = t~-y, with y = 0.5. Within specific regimes of applied potential and pit depth, the current was found to oscillate both periodically and chaotically with time. The oscillations result from an instability of a salt film on the metal surface. Owing to the instability of the salt film, a porous metal layer develops on the electrode surface, and this has a variety of implications in the field of corrosion.

Original languageEnglish (US)
Pages (from-to)1568-1573
Number of pages6
JournalJournal of the Electrochemical Society
Issue number6
StatePublished - Jun 1992
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry


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