Research Article
Baphia nitida Leaves Extract as a Green Corrosion Inhibitor for the Corrosion of Mild Steel in Acidic Media
Table 4
Corrosion parameters obtained from weight loss of mild steel in 2 M HCl containing various concentrations of BN extract at different temperatures.
| Concentration of BN (mg/L) | Temperature | 30°C | 40°C | 50°C | 60°C | (mg/cm2) | IE (%) | | (mg/cm2) | IE (%) | | (mg/cm2) | IE (%) | | (mg/cm2) | IE (%) | |
| 0 | 4.44 | — | — | 5.43 | — | — | 9.38 | — | — | 13.66 | — | — | 5 | 1.18 | 73.42 | 0.7342 | 1.92 | 64.64 | 0.6464 | 4.00 | 57.36 | 0.5736 | 6.60 | 51.68 | 0.5168 | 10 | 1.07 | 75.9 | 0.7590 | 1.83 | 66.3 | 0.6630 | 3.82 | 59.28 | 0.5928 | 6.27 | 54.1 | 0.5410 | 20 | 0.88 | 80.18 | 0.8018 | 1.68 | 69.06 | 0.6906 | 3.58 | 61.83 | 0.6183 | 5.86 | 57.1 | 0.5710 | 40 | 0.65 | 85.36 | 0.8536 | 1.48 | 72.74 | 0.7274 | 3.24 | 65.46 | 0.6546 | 5.43 | 60.25 | 0.6025 | 60 | 0.52 | 88.29 | 0.8829 | 1.31 | 75.87 | 0.7587 | 2.90 | 69.08 | 0.6908 | 5.01 | 63.32 | 0.6332 | 80 | 0.41 | 90.77 | 0.9077 | 1.13 | 79.19 | 0.7919 | 2.70 | 71.26 | 0.7126 | 4.77 | 65.08 | 0.6508 | 100 | 0.29 | 93.47 | 0.9347 | 0.97 | 82.14 | 0.8214 | 2.53 | 73.03 | 0.7303 | 4.59 | 66.4 | 0.6640 |
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