Corrosion Inhibition of Mild Steel by N-phenyl-1,4-phenylenediamine and its Schiff Base Derivatives in 1M HCl

Nor Zakiah Nor Hashim; Karimah Kassim; Yusairie Mohd

doi:10.4028/www.scientific.net/AMR.554-556.408

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 554-556Corrosion Inhibition of Mild Steel by...

Corrosion Inhibition of Mild Steel by N-phenyl-1,4-phenylenediamine and its Schiff Base Derivatives in 1M HCl

Abstract:

The efficiency of two Schiff base compounds namely (E)-N¹-benzylidene-N⁴-phenylbenzene-1,4-diamine (K1) and (E)-N¹-(4-methoxybenzylidene)-N⁴- phenylbenzene-1,4-diamine (K2) as corrosion inhibitors were compared with its parent amine namely N-phenyl-1,4-phenylenediamine (NPPD). Investigations have been made at 25 0C by electrochemical impedance spectroscopy (EIS) and polarization measurements in which the corrosion rates decrease and the percentage inhibition efficiencies and surface coverage degree increase with increasing additive concentration. The adsorption of inhibitors appears to follows Langmuir adsorption isotherm model. Results show K1 to have the highest inhibition efficiency among the three investigated compounds.

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Advanced Materials Research (Volumes 554-556)

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408-413

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https://doi.org/10.4028/www.scientific.net/AMR.554-556.408

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July 2012

Authors:

Nor Zakiah Nor Hashim, Karimah Kassim, Yusairie Mohd

Keywords:

Corrosion, Hydrochloric Acid, Inhibitor, Mild Steel, Schiff-Base

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