Polarization curve parameters for the corrosion of mild steel in 1 M HCl solution without and with different concentrations of inhibitors.

c (mM)	E corr (mV)	i corr (μA cm−2)	β a (mV dec−1)	β c (mV dec−1)	η (%)
Blank	−491	163.1	83.0	−163.5	—
0.05	−499	41.8	82.2	−158.6	74.37
0.10	−503	24.2	78.4	−161.0	85.16
0.15	−510	9.6	84.3	−162.8	94.11
0.20	−515	5.6	86.7	−167.6	96.57