Corrosion Inhibition of Steel in 1 M Hydrochloric Acid Medium by Chamomile Essential Oils

Chamomile oil was tested as corrosion inhibitor of steel in 1 M HCl using electrochemical impedance spectroscopy (EIS), Tafel polarisation methods and weight loss measurements. The inhibition efficiency of chamomile oil was calculated and compared. We note good agreement between these methods. The r...

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Bibliographic Details
Published inInternational journal of electrochemical science Vol. 7; no. 3; pp. 2361 - 2373
Main Authors Hmamou, D. Ben, Salghi, R., Zarrouk, A., Hammouti, B., Al-Deyab, S.S., Bazzi, Lh, Zarrok, H., Chakir, A., Bammou, L.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2012
Subjects
Acid medium
Chamomile essential oils
Corrosion
Inhibition
Steel
Inhibition
Chamomile essential oils
Corrosion
Steel
Acid medium
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Summary:Chamomile oil was tested as corrosion inhibitor of steel in 1 M HCl using electrochemical impedance spectroscopy (EIS), Tafel polarisation methods and weight loss measurements. The inhibition efficiency of chamomile oil was calculated and compared. We note good agreement between these methods. The results obtained revealed that the inhibitor tested reduce differently the kinetic of corrosion process of steel. Its efficiency increases with the concentration and attained 90% at 2 g/l. Effect of temperature on the corrosion behaviour of steel in 1M HCl was also studied in the range 298 K and 328 K. The thermodynamic data of activation are determined. The analysis of chamomile oil, obtained by hydro-distillation, using Gas Chromatography (GC) showed that the major components were were Linoleic acid (54.8 %), Oleic acid (23.5 %), Palmitic acid (10.7 %) and Linolenic acid (6.2).
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)13885-5