Research Article
Synergistic Effect of KI on Corrosion Inhibition of Mild Steel by Polynuclear Schiff Base in Sulphuric Acid
Table 6
Polarization parameters of MS specimens in 0.5 M H2SO4 at 30°C in the absence and presence of A9O3AP + 0.2 mM KI.
| Tafel data | (mM) | (mV/SCE) | (mA/cm2) | (mV/dec) | − (mV/dec) | |
| Blank | −467 | 1.1700 | 82 | 124 | — | 0.2 + KI | −469 | 0.1730 | 57 | 97 | 85.21 | 0.4 + KI | −465 | 0.0980 | 63 | 102 | 91.62 | 0.6 + KI | −470 | 0.0802 | 88 | 103 | 93.15 | 0.8 + KI | −453 | 0.0401 | 30 | 99 | 96.57 | 1.0 + KI | −451 | 0.0399 | 40 | 130 | 96.59 |
|
|