Application of Anise Extract for Corrosion Inhibition of Carbon Steel in CO2 Saturated 3.0% NaCl Solution

The corrosion inhibition of carbon steel in CO 2 -saturated 3% NaCl solution by anise extract (AE) dissolved in ethylene glycol (EG) was studied using weight loss, electrochemical and surface analysis (AFM) techniques. Inhibition efficiency increased with increase in AE concentration and temperature...

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Veröffentlicht in:	Protection of metals and physical chemistry of surfaces 2018, Vol.54 (1), p.122-134
Hauptverfasser:	Peimani, Amin, Nasr-Esfahani, Mojtaba
Format:	Artikel
Sprache:	eng
Schlagworte:	Characterization and Evaluation of Materials Chemistry and Materials Science Corrosion and Coatings Industrial Chemistry/Chemical Engineering Inorganic Chemistry Materials Science Metallic Materials Physicochemical Problems of Materials Protection Tribology
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Zusammenfassung:	The corrosion inhibition of carbon steel in CO 2 -saturated 3% NaCl solution by anise extract (AE) dissolved in ethylene glycol (EG) was studied using weight loss, electrochemical and surface analysis (AFM) techniques. Inhibition efficiency increased with increase in AE concentration and temperature, reaching maximum value of 93% at 400 ppm AE concentration. Polarization results show that AE functions as a mixed-type inhibitor. Corrosion inhibition is assumed to occur by physicochemical adsorption following Langmuir adsorption isotherm model. Morphological studies of the carbon steel electrode surface undertaken by AFM confirm the adsorption of the extract on the metal surface.
ISSN:	2070-2051 2070-206X
DOI:	10.1134/S2070205118010240