Table 3 Potentiodynamic polarization data for mild steel in 3.5% NaCl solution without and with different concentrations (50, 100, 150, and 200 ppm) of (VF) hexane and acetone extracts at 298 K.

From: Vicia faba peel extracts bearing fatty acids moieties as a cost-effective and green corrosion inhibitor for mild steel in marine water: computational and electrochemical studies

Inhibitor

Conc. (ppm)

Ecorr (mV)

βa (1/V)

βc (1/V)

icorr (µA/cm2)

η (%)

Blank

–

− 543

12.521

− 8.396

1290

–

Hexane extract

50

− 446

6.841

− 6.529

196.83

65.55

100

− 377

4.730

− 5.698

132.02

76.31

150

− 337

4.496

− 4.541

81.26

87.08

200

− 285

6.910

− 4.695

58.63

97.84

Acetone extract

50

− 483

7.408

− 7.071

231.16

58.87

100

− 437

5.483

− 6.605

153.03

86.81

150

− 396

5.284

− 5.335

95.48

78.73

200

− 354

8.583

− 5.832

72.83

88.67

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