Table 3. Polarization parameters for mild steel in 1.0 M HCl with various concentrations of corrosion inhibitor.

	Potentiodynamic polarization parameters (PD)
Conc. (mM)	βa(V dec−1)	βc(V dec−1)	Icorr (μA cm−2)	Corrosion rate (mpy)	IE (%)
Blank	0.1359	0.1315	667.00	7.5910	0.00
0.05	0.1289	0.1276	598.00	6.9640	10.34
0.10	0.1104	0.1217	407.00	4.7360	38.98
0.20	0.1012	0.1184	343.00	3.9950	48.58
0.40	0.0877	0.1138	177.00	2.0580	73.46
0.50	0.6004	0.4030	44.620	0.0537	93.31