Table 3 Mild steel Tafel parameters in 1 M HCl solution without and with the addition of different concentrations of OHB.

From: Isatin Schiff base is an effective corrosion inhibitor for mild steel in hydrochloric acid solution: gravimetrical, electrochemical, and computational investigation

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

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