Salicornia Ext
Salicornia Extract as Corrosion Inhibitor of Carbon
Steel in Acidic Medium
Kadhim F. Al-Sultani
University of Babylon- Iraq. [email protected]
Abstract: The
inhibitive effect by salicornia extract for carbon steel in 1M H2SO4 solution
was investigated using gravimetric methods and electrochemical techniques at
room temperature. The results showed that the presence of salicornia extract
inhibited the corrosion of carbon steel and that the inhibition efficieucy
depended on the concentration of the inhibitor as well as on the time expouser
. The dry salicornia extract and the protective film have been analyzed using
Fourier transform infrared FTIR spectroscopy. Inhibitive effects of the extract
obtained from impedance and polarization measurements were found increase with
increase concentration of inhibitor. The adsorption of the inhibitor
characteristics were approximated by Langmuir adsorption isotherm at all
concentration at 25 ºC. On the other hands, the metallurgical microscopy was
used to observations the metallographic.
[Kadhim F. Al-Sultani. Salicornia Extract as
Corrosion Inhibitor of Carbon Steel in Acidic Medium. J Am Sci 2012;8(10):597-602]. (ISSN:
1545-1003). http://www.jofamericanscience.org. 82
Key word: carbon steel, salicornia extract, acidic media,
Langmuir isotherm, FTIR, potentidynamic polarization. Full Text 82
