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<identifier>oai:HAL:hal-01097030v1</identifier>
<datestamp>2018-01-11</datestamp>
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<setSpec>subject:chim</setSpec>
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<publisher>HAL CCSD</publisher>
<title lang=en>Corrosion Inhibition by Isertia coccinea Plant Extract in Hydrochloric Acid Solution</title>
<creator>Lebrini, M.</creator>
<creator>Robert, Florent</creator>
<creator>Blandinières, P.A.</creator>
<creator>Roos, C.</creator>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>International journal of electrochemical science</source>
<identifier>hal-01097030</identifier>
<identifier>https://hal-agroparistech.archives-ouvertes.fr/hal-01097030</identifier>
<source>https://hal-agroparistech.archives-ouvertes.fr/hal-01097030</source>
<source>International journal of electrochemical science, 2011, 6, pp.2443-2460</source>
<language>en</language>
<subject lang=en>Isertia coccinea</subject>
<subject lang=en>Corrosion inhibitors</subject>
<subject lang=en>C38 steel</subject>
<subject lang=en>Acidic media</subject>
<subject lang=en>Adsorption</subject>
<subject>[SDV] Life Sciences [q-bio]</subject>
<subject>[CHIM] Chemical Sciences</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The effect of alkaloids extracted from Isertia coccinea plant (AEIC) on the corrosion of C38 steel in 1 M hydrochloric acid was investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. Potentiodynamic polarization curves indicated that the extract behave as mixed-type inhibitor. The experimental data obtained from EIS method show a frequency distribution and therefore a modelling element with frequency dispersion behaviour, a constant phase element (CPE) has been used. The inhibition efficiencies of the extract calculated by three methods show the same tendency. Inhibition was found to increase with increasing concentration of the plant extract. The results obtained show that the extract solution of the plant could serve as an effective inhibitor for the corrosion of C38 steel in hydrochloric acid solution. The apparent activation energy of the process taking place in inhibitor presence was determined on the ground of four temperature values in the range from 25 °C to 55 °C using the data obtained by two independent methods. Theoretical fitting of different isotherms, Langmuir, Temkin and Frunkin, were tested to clarify the nature of adsorption.</description>
<date>2011</date>
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