| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1470375 | Corrosion Science | 2011 | 5 Pages |
The behaviour of imidazoline and an acid functionalised resorcinarene as steel corrosion inhibitors in carbon dioxide (CO2)-saturated brine solutions has been studied using an electrochemically integrated multi-electrode array namely the wire beam electrode (WBE). Both imidazoline and resorcinarene acid provided excellent inhibition to general CO2 corrosion; however imidazoline was found to aggravate localised corrosion by creating a small number of major anodes that focused on a small area of the WBE surface, leading to highly concentrated anodic dissolution. The resorcinarene acid showed distinctively different behaviour by generating a large number of minor anodes randomly distributing over the WBE surface, leading to insignificant general anodic dissolution. These results indicate that resorcinarene acid provided effective localised corrosion inhibition by promoting a random distribution of insignificant anodic currents.
Research highlights► Novel experiment for the discovery of localised corrosion inhibitors. ► New method of identifying inhibitors promoting random distribution of anodic currents. ► Discovery of resorcinarene acid as an effective localised corrosion inhibitor.
