Performance of Methyl-5-Benzoyl-2-Benzimidazole Carbamate (Mebendazole) as Corrosion Inhibitor for Mild Steel in Dilute Sulphuric Acid

Table 3

Potentiodynamic polarization parameters at 30°C.

Inhibitor conc. (g)	Icorr (µA)	Ecorr (mV)	Corrosion rate (mm/yr)	Inhibitor efficiency (%)	Cathodic beta (mV)	Anodic beta (mV)
0.0	−6.58 mA	−429.75	48.61	—	182.00	104.32
0.5	−286.02	−409.55	2.11	95.65	136.93	84.26
1.0	−62.22	−407.58	0.46	99.05	110.80	57.01
1.5	−182.34	−442.46	1.35	97.23	99.91	134.25