Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7895423 | Corrosion Science | 2015 | 9 Pages |
Abstract
Local electrochemical measurements (open circuit potential (OCP), cathodic and anodic polarization curves, pitting potentials) were performed at random locations on 1Â m long ribbed steel bars with different surface conditions. The results show that the local OCP values are statistically distributed. The standard deviation was found to be 45Â mV for “as received” surface condition, decreasing to 10Â mV only after prolonged immersion in sat. Ca(OH)2. A model based on local variations of the reduction current density could explain the variations in local OCP and allowed predicting the overall global OCP of the long bars when completely immersed in solution.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
M. Stefanoni, U. Angst, B. Elsener,