International Journal of Corrosion / 2013 / Article / Tab 5

Research Article

Inhibition Behaviour of Some Isonicotinic Acid Hydrazides on the Corrosion of Mild Steel in Hydrochloric Acid Solution

Table 5

Impedance parameters for corrosion of MS in 0.5 M HCl in the absence and presence of different concentrations of INIMH and INPMH at 30°C.

InhibitorsConcentration
(in ppm)
(Ω cm2) (μF Cm−2)IE (%)

Blank0177.5149.60

INIMH200562.835.3268.46
300759.327.9776.62
400870.727.1779.61
5001192.023.2785.10

INPMH200537.539.5166.97
300645.233.1272.48
400817.229.6278.27
5001081.027.6983.58

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