Table 3: Polarization data of CS in 0.5 M HCl without and with various concentrations of AO at 298 K.
Electrode | Inh. Conc. | Ecorr. (mV) | Icorr. (μA/cm2) | Tafel slopes | Corrosion rate (CR) (mpy) | η (%) | |
βa (V/decade) | βc (V/decade) | ||||||
CS | Blank | −499 | 4,000 | 0.225 | 0.198 | 550 | 0 |
50 ppm | −497 | 228 | 0.178 | 0.153 | 118 | 94 | |
50 ppm + 5 kGy | −505 | 210 | 0.147 | 0.114 | 108 | 95 | |
50 ppm + 15 kGy | −506 | 201 | 0.147 | 0.151 | 104 | 95 | |