| Autor: |
J. Jeyasundari, S. Rajendran, J. Sathiyabama, B. Shyamaladevi |
| Jazyk: |
angličtina |
| Rok vydání: |
2010 |
| Předmět: |
|
| Zdroj: |
Journal of Engineering Science and Technology Review, Vol 3, Iss 1, Pp 27-31 (2010) |
| Druh dokumentu: |
article |
| ISSN: |
1791-2377 |
| Popis: |
The inhibition efficiency of phenolphthalein in controlling corrosion of carbon steel immersed in well water has been evaluatedby mass loss method both in absence and presence of zinc ion. A synergistic effect exists between phenolphthalein (PN)and Zn2+. The inhibition efficiency (IE) of the PN – Zn2+ system decreases with increase in immersion period. Addition ofN-Cetyl-N, N, N-Trimethylammlonium bromide (CTAB) sodium dodecyl sulphate (SDS), sodium sulphite (Na2SO3) doesnot change the excellent inhibition efficiency of the PN-Zn2+ system. Polarization study suggests that the Pn-Zn2+ systemfunctions as a mixed inhibitor system. AC impedance spectra reveal the presence of a protective film on the metal surface.FTIR spectra indicate that the protective film consists of Fe2+-PN complex and Zn(OH)2. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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