Research Article
Corrosion Inhibition of Carbon Steel in 0.5 M H2SO4 by Phtalocyanine Blue
Table 2
Potentiodynamical polarization parameters for the corrosion of 1018 carbon steel in 0.5 M H2SO4 at 25°C.
| (ppm) | (mV) | (mA/cm2) | (mV) | (mA/cm2) | I.E. (%) |
| 0 | −503 | 0.3 | 725 | 6.2 | — | 100 | −456 | 0.2 | 535 | 3.7 | 40 | 200 | −457 | 0.15 | 645 | 5.3 | 15 | 400 | −460 | 0.13 | 530 | 2.8 | 55 | 600 | −462 | 0.12 | 535 | 1.7 | 67 | 800 | −459 | 0.11 | 286 | 1.1 | 82 | 1000 | −461 | 0.1 | 207 | 4.9 | 26 |
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