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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.12 [2005] >
IJCT Vol.12(4) [July 2005] >
| Title: | Corrosion inhibition of carbon steel by adipic acid – Zn2+ system |
| Authors: | Florence, G Ruba Helen
Anthony, A Noreen
Sahayaraj, J Wilson
Amalraj, A John
Rajendran, Susai |
| Keywords: | Carbon steel
corrosion inhibition
adipic acid
well water
zinc ion |
| Issue Date: | Jul-2005 |
| Publisher: | CSIR |
| IPC Code: | C23F11/00 |
| Abstract: | The inhibition
efficiency (IE) of adipic acid (AA)-Zn2+ system in controlling
corrosion of carbon steel immersed in well water has been evaluated by
weight-loss method. The formulation consisting of 50 ppm of AA and 50 ppm of Zn2+
has 95% IE. At lower pH value(pH=6) IE decreases and in alkaline medium (pH=8)
IE increases. Polarization study reveals that AA- Zn2+ system
functions as a mixed inhibitor. AC impedance spectra reveal that a protective
film is formed on the metal surface. FTIR spectra reveal that the protective
film consists of Fe2+-AA complex and Zn(OH)2. |
| Page(s): | 472-476 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.12(4) [July 2005]
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