Table 3.

Mild steel Tafel parameters in 1 M HCl solution without and with the addition of different concentrations of OHB.

Conc. mM	Ecorr (mV)	βa (mV/dec)	βc (mV/dec)	icorr (μA·cm−2)	IE (%)
0.0	− 480	245	215	510 ± 3.75	0
0.1	− 520	110.6	178.4	343.9 ± 3.90	68.9
0.2	− 528	97.4	144.6	200.8 ± 2.68	79.6
0.3	− 534	91.2	114.7	85.7 ± 1.88	88.3
0.4	− 524	74.8	107.8	67.7 ± 1.68	93.6
0.5	− 537	80.3	101.3	61.3 ± 2.15	96.5