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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
New thio-compounds as corrosion inhibitor for steel in 1 M HCl
Corrosion Science, Volume 48, No. 9, Year 2006
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Description
Some S-containing compounds newly synthesised have been tested as inhibitors for the corrosion of steel in 1 M HCl solution. Weight loss measurements, potentiodynamic polarisation and impedance spectroscopy (EIS) methods are used. The inhibiting action increases with the concentration of the compounds tested. The highest efficiency 95% is obtained at 10-4 M of [(11-hydroxyundecyl)thio]acetic acid (3 and 4). We note good agreement between gravimetric and electrochemical methods (potentiodynamic polarisation and EIS). Polarisation measurements show also that 3 and 4 act as mixed inhibitors. The cathodic curves indicate that the reduction of proton at the steel surface happens with an activating mechanism. 3 adsorbs on the steel surface according to Langmuir adsorption model. Effect of temperature is also studied between 308 K and 353 K. © 2005.
Authors & Co-Authors
Elayyachy, Mohamed
Morocco, Oujda
Faculté Des Sciences D’oujda
El Idrissi, A.
Morocco, Oujda
Faculté Des Sciences D’oujda
Hammouti, Belkheir
Morocco, Oujda
Faculté Des Sciences D’oujda
Statistics
Citations: 210
Authors: 3
Affiliations: 1
Identifiers
Doi:
10.1016/j.corsci.2005.09.016
ISSN:
0010938X