Mild Steel Corrosion Inhibition by Benzotriazole in 0.5M Sulfuric Acid Solution on Rough and Smooth Surfaces

The corrosion inhibition of benzotriazole in 0.5 M sulfuric acid solution is evaluated on the mild steel specimens with two amounts of surface roughness. Benzotriazole adsorption on mild steel surface followed Langmuir isotherm. The corrosion inhibitor has generally physisorption on both surfaces. T...

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Bibliographic Details
Published in:International journal of electrochemical science 2017-09, Vol.12 (9), p.8708-8732
Main Authors: Amini, M., Aliofkhazraei, M., Kashani, A.H. Navidi, Rouhaghdam, A. Sabour
Format: Article
Language:English
Subjects:
Benzotriazole
Corrosion
Mild Steel
Roughness
Sulfuric Acid
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Summary:The corrosion inhibition of benzotriazole in 0.5 M sulfuric acid solution is evaluated on the mild steel specimens with two amounts of surface roughness. Benzotriazole adsorption on mild steel surface followed Langmuir isotherm. The corrosion inhibitor has generally physisorption on both surfaces. The results obtained by the different experimental methods showed good agreement with each other. Results of FTIR test showed a peak related to C-H bond for both surfaces as a proof of the presence of benzotriazole on the steel’s surface which its intensity was higher for rough surface because of more adsorption of corrosion inhibitor on the surface.
ISSN:1452-3981
1452-3981
DOI:10.20964/2017.09.70