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 language||English (US)|
|Number of pages||5|
|Journal||Journal of the Electrochemical Society|
|State||Published - Jul 1985|