Table 1 Potentiodynamic polarization parameters for the corrosion of the Q230A steel in 1M HCl in absence and presence of different concentrations of the extracts
From: Investigation of ginkgo biloba leave extracts as corrosion and Oil field microorganism inhibitors
Extract | Concentration | −Ecorr | Icorr | βa | βc | Corrosion rate | IE (%) |
|---|---|---|---|---|---|---|---|
(mg/L) | (mV) | (μA/cm2) | (mV/dec) | (mV/dec) | (mm/a) | ||
-- | -- | 0.46083 | 151.440 | 90.43 | 155.08 | 1.7753 | -- |
WE | 10 | 0.47503 | 131.180 | 86.83 | 160.49 | 1.5430 | 13.1 |
WE | 50 | 0.45705 | 96.410 | 72.35 | 151.56 | 1.1340 | 36.1 |
WE | 100 | 0.45056 | 57.454 | 65.77 | 161.94 | 0.6758 | 61.9 |
WE | 200 | 0.4455 | 55.195 | 59.85 | 143.79 | 0.6492 | 63.4 |
WE | 500 | 0.43980 | 34.272 | 55.18 | 134.99 | 0.4031 | 77.3 |
WE | 1,000 | 0.42657 | 33.219 | 52.64 | 128.09 | 0.3907 | 78.0 |
AE | 10 | 0.45347 | 111.570 | 77.58 | 152.17 | 1.3123 | 26.1 |
AE | 50 | 0.45128 | 85.704 | 67.94 | 129.73 | 1.0081 | 43.2 |
AE | 100 | 0.45489 | 54.511 | 65.70 | 121.36 | 0.6412 | 63.9 |
AE | 200 | 0.45549 | 31.770 | 64.64 | 113.19 | 0.3737 | 78.9 |
AE | 500 | 0.43987 | 29.917 | 62.11 | 112.71 | 0.3525 | 80.1 |
AE | 1,000 | 0.42490 | 29.194 | 68.59 | 116.21 | 0.3434 | 80.7 |