The corrosion inhibition of steel with Schiff base compounds in 2 M HCl

The inhibitor effect of N,N'-bis(salicylidene)-2-hydroxy-1,3-propanediamine (LOH) and N,N-bis(2-hydroxyacetophenylidene)-2-hydroxy1,3-propanediamine (LACOH) in 2 mol dm 3 HCl medium on mild steel with known compound has been investigated at 303 K. It has been determined using weight loss, polar...

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Bibliographic Details
Published in:Materials chemistry and physics 2005-10, Vol.93 (2-3), p.325-329
Main Authors: Emregul, Kaan C, Akay, A Abdulkadir, Atakol, Orhan
Format: Article
Language:English
Online Access:Get full text
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Summary:The inhibitor effect of N,N'-bis(salicylidene)-2-hydroxy-1,3-propanediamine (LOH) and N,N-bis(2-hydroxyacetophenylidene)-2-hydroxy1,3-propanediamine (LACOH) in 2 mol dm 3 HCl medium on mild steel with known compound has been investigated at 303 K. It has been determined using weight loss, polarization and impedance methods (EIS) that the corrosion rates decrease and percentage inhibition efficiencies and surface coverage degrees increase with increasing additive concentration. The inhibitors appear to function through the Langmuir adsorption isotherm. Results show LACOH to have the highest inhibition efficiency among the two compounds studied.
ISSN:0254-0584
DOI:10.1016/j.matchemphys.2005.03.008