Rotating Ring-Disk Electrode Studies of Corrosion Rates and Partial Currents: Cu and Cu30Zn in Oxygenated Chloride Solutions

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Abstract
The corrosion of copper and in oxygenated has been studied by ring‐disk electrode methods. The corrosion rates at open circuit as a function of rotation speed and temperature have been measured on an instantaneous basis through ring currents for the oxidation of the copper (I) product. Results have been confirmed against solution analyses. Automatically recorded partial current curves have been obtained as a function of copper and alloy potential by scanning currents both anodic and cathodic to the open‐circuit condition. The Tafel plots from the anodic partial currents of copper and alloy disks under immersion corrosion at several temperatures have been derived and compared to the predictions of a simultaneous dissolution model.

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