Digital Impedance for Faradaic Analysis III. Copper Corrosion in Oxygenated 0.1N HCl

William H. Smyrl, Larry L. Stephenson

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Impedance measurements have been made on copper rotating disks corroding in oxygenated 0.1N HCI. A model is developed here for the first time for the faradaic impedance of a corrosion couple consisting of an anodic dissolution reaction dominated by convective diffusion and a cathodic reaction under kinetic control. The model was found to be obeyed for all values of disk rotation rate, oxygen concentration, and voltage excitation frequency. The corrosion rate was found to depend on oxygen concentration to the 2/3 power, and on rotation rate to the 1/6 power.

Original languageEnglish (US)
Pages (from-to)1563-1567
Number of pages5
JournalJournal of the Electrochemical Society
Volume132
Issue number7
DOIs
StatePublished - Jul 1985

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