International Journal of Corrosion / 2013 / Article / Tab 4

Research Article

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

Table 4

Polarization parameters and corresponding inhibition efficiency (IE) for the corrosion of the MS in 0.5 M HCl without and with addition of various concentrations of INIMH and INPMH at 30°C.

InhibitorConcentration
(ppm)
(mv) (μA cm−2)IE (%)

Blank05082617.0

INIMH200468687.073.74
300466509.280.54
400458498.880.94
500437434.383.40

INPMH200485871.566.69
300477835.568.07
400465526.879.87
500456470.082.04

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