Research Article

Adsorption and Corrosion Inhibition Characteristics of Some Nicotinamide Derivatives on Mild Steel in Hydrochloric Acid Solution

Table 5

Impedance parameters for the corrosion of MS in 0.5 M HCl in the absence and presence of different concentrations of IMN and TMN.

Inhibitor IE
(ppm)(  cm2)( F cm−2)(%)

Blank027.81320.2

IMN20095.75102.471.0
300128.491.0778.3
400140.877.9980.2
500181.561.4584.7

TMN200160.081.3482.6
300271.167.6189.7
400316.148.7391.2
500536.041.4394.8