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Fitted electrochemical parameters of modified 7075 aluminum alloys with various etching times (min).
| Samples | 0 | 1 | 3 | 5 | 7 | 9 |
|---|---|---|---|---|---|---|
| Rs (Ω.cm2) | 7.2 | 6.9 | 6.8 | 6.9 | 7.0 | 7.3 |
| Rf (Ω.cm2) | 504.0 | 3496.6 | 3606.1 | 8374.3 | 10,191.8 | 10,274.3 |
| C (μF.cm−2) | 40 | 8.0 | 7.7 | 6.0 | 4.1 | 3.9 |
