Research Article
Inhibition of Mild Steel Corrosion in Sulphuric Acid Using Esomeprazole and the Effect of Iodide Ion Addition
Table 5
Electrochemical impedance parameters for mild steel in 1 M H2SO4 containing different concentrations of esomeprazole with the addition of KI.
| Inhibitor concentration (ppm) | ( cm2) | (μF cm−2) | I.E (%) |
| Blank | 13.67 | 1656.9 | — | 50 | 44.746 | 153.8 | 69.45 | 100 | 48.623 | 134.58 | 71.89 | 150 | 53.798 | 110.93 | 74.59 | 200 | 56.90 | 96.86 | 75.98 | 250 | 59.582 | 87.18 | 77.06 | 300 | 66.291 | 71.77 | 79.38 | 25 ppm KI | 68.499 | 66.6 | 80.04 | 50 ppm KI | 86.567 | 41.83 | 84.21 |
|
|