Research Article
Interaction of Polyaniline with Surface of Carbon Steel
Table 1
Composition (in volume%) and structural parameters ofinorganic layers at the PANI-Fe interface before and after corrosion experiment.
| | Sample | Phase | Volume, % | Crystallite size, nm |
| | Fe-P1/before | Melanterite (FeSO4 × 7H2O) | 85 | 34 | | Rozenite (FeSO4 × 4H2O) | 15 | 75 |
| | Fe-P1/after | Goethite (α-FeOOH) | — | — | | Rozenite (FeSO4 × 4H2O) | — | — |
| | Fe-P2/before | Rozenite (FeSO4 × 4H2O) | 81 | 61 | | Melanterite (FeSO4 × 7H2O) | 9 | 54 |
| | Fe-P2/after | Goethite (α-FeOOH) | 81 | 13 | | Akaganeite (β-FeOOH) | 14 | 12 |
| | Fe-P2-b/before | No inorganic phases detected |
| | Fe-P2-b/after | Lepidocrocite (γ-FeOOH) | 73 | 19 | | Goethite (α-FeOOH) | 14 | 11 | | Magnetite (Fe3O4) | 9 | 25 |
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