Inhibition of Mild Steel Corrosion by 3-Benzoylmethyl Benzimidazolium Hexafluoroantimonate in Acidic Solution

Table 1

Tafel corrosion currents and percent inhibitions of 3-benzoylmethyl benzimidazolium hexafluoroantimonate (BMBI) at various concentrations in 1.0 M HCl at room temperature.

	1.0 M HCl	1.0 M HCl + 5×10^−7 M BMBI	1.0 M HCl + 5×10^−6 M BMBI	1.0 M HCl + 5×10^−5 M BMBI	1.0 M HCl + 5×10^−4 M BMBI
𝐸rest/V versus SCE	−0.459	−0.472	−0.472	−0.461	−0.583
I corrosion/mA	0.74	0.34	0.27	0.16	0.026
Percent Inhibition	—	54.05	63.51	78.38	96.49