The Role of Conductivity Variations Within Artificial Pits During Anodic Dissolution

Richard Alkire, Daniel Ernsberger, David Damon

Research output: Contribution to journalArticlepeer-review


Owing to restricted mass transport, the conductivity of electrolytic solution within occluded regions may be different from that of the bulk electrolyte outside the occluded regions. Experimental and theoretical investigations have been carried out on artificial copper pits (length to diameter ratio between 0.93 and 10.3) dissolving in binary copper sulfate solutions (0.001-0.5M at 25°C) in order to clarify conditions under which conductivity effects are appreciable. Both potentiostatic (50-1500 mV) and galvanostatic (1.2-6.8 mA/ cm2) data agree with a mathematical model which includes charge transfer, ohmic, geometric, and unsteady-state mass transport processes. The model generates dimensionless criteria by which the importance of conductivity changes in other chemical systems can be estimated.

Original languageEnglish (US)
Pages (from-to)458-464
Number of pages7
JournalJournal of the Electrochemical Society
Issue number4
StatePublished - Apr 1976

ASJC Scopus subject areas

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


Dive into the research topics of 'The Role of Conductivity Variations Within Artificial Pits During Anodic Dissolution'. Together they form a unique fingerprint.

Cite this