TY  - JOUR
AU  - Lebrini, M.
AU  - Robert, F.
AU  - Roos, C.
PY  - 2010//
TI  - Inhibition Effect of Alkaloids Extract from Annona Squamosa Plant on the Corrosion of C38 Steel in Normal Hydrochloric Acid Medium
T2  - Int. J. Electrochem. Sci.
JO  - International Journal of Electrochemical Science
SP  - 1698
EP  - 1712
VL  - 5
IS  - 11
PB  - ELECTROCHEMICAL SCIENCE GROUP
KW  - Plant extract
KW  - corrosion inhibitors
KW  - C38 steel
KW  - acidic media
KW  - adsorption
N2  - In this work, an alkaloids extract from Annona squamosa plant have been studied as possible corrosion inhibitor for C38 steel in molar hydrochloric acid (1 M HCl). Potentiodynamic polarization and AC impedance methods have been used. The corrosion inhibition efficiency increases on increasing plant extract concentration. Polarisation studies showed that Annona squamosa extract was mixed-type inhibitor in 1 M HCl. The inhibition efficiency of Annona squamosa extract was temperature-dependent and its addition led to an increase of the activation corrosion energy revealing a physical adsorption between the extract and the metal surface. The adsorption of the Annona squamosa extract followed Langmuir's adsorption isotherm. The inhibitive effect of Annona squamosa is ascribed to the presence of organic compounds in the extract. The examined extract is considered as non-cytotoxic substance.
SN  - 1452-3981
L1  - http://php.ecofog.gf/refbase/files/lebrini/2010/20_Lebrini_etal2010.pdf
N1  - ISI:000283999000015
ID  - Lebrini_etal2010
ER  -