Synergistic Effect of KI on Corrosion Inhibition of Mild Steel by Polynuclear Schiff Base in Sulphuric Acid

Table 5

Potentiodynamic polarization parameters of MS specimens in 0.5 M H₂SO₄ at 30°C in the absence and presence of A9O3AP.

Tafel data
𝐶; (mM)	𝐸corr; (mV/SCE)	𝐼corr; (mA/cm^2)	𝑏𝑎; (mV/dec)	−𝑏𝑐; (mV/dec)	𝜂pol%
Blank	−467	1.1700	82	124	—
0.2	−457	1.0220	95	114	12.65
0.4	−475	0.8240	78	116	29.57
0.6	−450	0.7010	68	117	40.09
0.8	−458	0.4511	63	103	61.44
1.0	−470	0.1730	57	097	85.21