| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1469636 | Corrosion Science | 2012 | 7 Pages |
Potential distribution of mild steel immersed in seawater for various periods was investigated by SMRE (scanning micro-reference electrode). For the coupons immersed horizontally, the edge was cathode while the middle was anode. When immersed vertically, the top of the coupon was the main cathode. After a period of immersion, the bottom became the main cathode. No matter how the coupons were placed, the composition of corrosion products in the cathodic area was β-FeOOH and Fe3O4 while in the anodic area was mainly γ-FeOOH. Relationship between potential distribution and corrosion products was discussed and the reasons for this phenomenon were analysed.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The edge was the cathodic area and the middle was the anodic area. ► The composition of corrosion products in the cathodic area was β-FeOOH and Fe3O4 while in the anodic area was mainly γ-FeOOH. ► Potential difference makes corrosion products different.
