Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well Water
The inhibition efficiency (IE) of caffeine in controlling corrosion of carbon steel in well water in the absence and presence of Zn2+ has been evaluated by mass loss method. The formulation, consisting of 200 ppm of caffeine and 50 ppm Zn2+, offers 82% inhibition efficiency to carbon steel immersed...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2013/521951 |
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| author | K. Rajam S. Rajendran N. Nazeera Banu |
| author_facet | K. Rajam S. Rajendran N. Nazeera Banu |
| author_sort | K. Rajam |
| collection | DOAJ |
| description | The inhibition efficiency (IE) of caffeine in controlling corrosion of carbon steel in well water in the absence and presence of Zn2+ has been evaluated by mass loss method. The formulation, consisting of 200 ppm of caffeine and 50 ppm Zn2+, offers 82% inhibition efficiency to carbon steel immersed in well water. Addition of malic acid increases inhibition efficiency of the caffeine-Zn2+ system. The inhibition efficiency of caffeine-Zn2+ and caffeine-Zn2+-malic acid system decreases with the increase in immersion period and increases with the increase in pH from 3 to 11. AC impedance spectra, SEM micrographs, and AFM studies reveal the formation of protective film on the metal surface. The film is found to be UV fluorescent. |
| format | Article |
| id | doaj-art-bf8d52e814894356a30bfd57cdcca592 |
| institution | OA Journals |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-bf8d52e814894356a30bfd57cdcca5922025-08-20T02:19:26ZengWileyJournal of Chemistry2090-90632090-90712013-01-01201310.1155/2013/521951521951Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well WaterK. Rajam0S. Rajendran1N. Nazeera Banu2Department of Chemistry, K. L. N. College of Information Technology, Pottapalayam 630 611, IndiaPG and Research Department of Chemistry, GTN Arts College, Dindigul 624 005, IndiaDepartment of Chemistry, RVS School of Engineering and Technology, Dindigul 624 005, IndiaThe inhibition efficiency (IE) of caffeine in controlling corrosion of carbon steel in well water in the absence and presence of Zn2+ has been evaluated by mass loss method. The formulation, consisting of 200 ppm of caffeine and 50 ppm Zn2+, offers 82% inhibition efficiency to carbon steel immersed in well water. Addition of malic acid increases inhibition efficiency of the caffeine-Zn2+ system. The inhibition efficiency of caffeine-Zn2+ and caffeine-Zn2+-malic acid system decreases with the increase in immersion period and increases with the increase in pH from 3 to 11. AC impedance spectra, SEM micrographs, and AFM studies reveal the formation of protective film on the metal surface. The film is found to be UV fluorescent.http://dx.doi.org/10.1155/2013/521951 |
| spellingShingle | K. Rajam S. Rajendran N. Nazeera Banu Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well Water Journal of Chemistry |
| title | Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well Water |
| title_full | Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well Water |
| title_fullStr | Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well Water |
| title_full_unstemmed | Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well Water |
| title_short | Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well Water |
| title_sort | effect of caffeine zn2 system in preventing corrosion of carbon steel in well water |
| url | http://dx.doi.org/10.1155/2013/521951 |
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