Research Article
Characterization of Corrosion Products on Carbon Steel Exposed to Natural Weathering and to Accelerated Corrosion Tests
Table 3
Quantitative analyses of crystal phases determined by Rietveld refinement of XRD data.
| | Test site | Exposure time (months) | Crystalline phases | | Lepidocrocite | Goethite | Magnetite | Akaganeite |
| | Cubatão | 2 | 58.5 | 41.5 | — | — | | Cubatão | 3 | 65.7 | 34.3 | — | — | | Cubatão | 6 | 58.6 | 34.0 | 7.4 | — | | Cubatão | 9 | 36.5 | 12.6 | 50.9 | — | | Paula Souza | 2 | 67.2 | 32.8 | — | — | | Paula Souza | 3 | 60.0 | 40.0 | — | — | | Paula Souza | 6 | 49.8 | 50.2 | — | — | | Paula Souza | 9 | 59.4 | 40.6 | — | — | | Test A | — | 6.6 | 37.6 | 55.8 | — | | Test B | — | 14.6 | 31.7 | 42.7 | 11.0 |
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