TY  - JOUR
AU  - Faustin, M.
AU  - Lebrini, M.
AU  - Robert, F.
AU  - Roos, C.
PY  - 2011//
TI  - Corrosion studies of C38 steel by alkaloids extract of a tropical plant type
T2  - Int.J.Electrochem.Sci.
JO  - International Journal of Electrochemical Science
SP  - 4095
EP  - 4113
VL  - 6
IS  - 9
KW  - Acidic media
KW  - C38 steel
KW  - Corrosion inhibitor
KW  - Plant extract
N2  - Alkaloids extract of Aspidosperma album was tested as corrosion inhibitor for C38 steel in 1 M HCl by using polarization and electrochemical impedance spectroscopy (EIS). Potentiodynamic polarization curves indicated that the plant extract behaves as mixed-type inhibitors. Impedance measurements showed that the double-layer capacitance decreased and charge-transfer resistance increased with increase in the inhibitors concentration and hence increasing in inhibition efficiency. The effect of temperature on the corrosion behavior of C38 steel in 1 M HCl with and without addition of plant extract was studied in the temperature range 25 – 55°C. The adsorption of the inhibitor molecules was in accordance with the Langmuir adsorption isotherm. The results obtained show that this plant extract could serve as an effective inhibitor for the corrosion of C38 steel in hydrochloric acid. © 2011 by ESG.
SN  - 14523981 (Issn)
UR  - http://www.scopus.com/inward/record.url?eid=2-s2.0-80052940732&partnerID=40&md5=87a14609beb0e81630c9c901190db8cf
L1  - http://php.ecofog.gf/refbase/files/faustin/2011/348_Faustin_etal2011.pdf
N1  - Export Date: 21 October 2011; Source: Scopus; Language of Original Document: English; Correspondence Address: Roos, C.; Laboratoire Matériaux et Molécules en Milieu Amazonien, UAG-UMR ECOFOG, Campus Trou Biran, Cayenne 97337, French Guiana; email: florent.robert@guyane.univ-ag.fr
ID  - Faustin_etal2011
ER  -