Investigation of the inhibitive effect of poly(diphenylamine) on corrosion of iron in 0.5 M H2SO4 solutions
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Investigation of the inhibitive effect of poly(diphenylamine)
on corrosion of iron in 0.5 M H2SO4 solutions
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| Creator |
Jeyaprabha, C.
Sathiyanarayanan, S. Phani, K.L.N. Venkatachari, G. |
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| Subject |
Electrodics and Electrocatalysis
Corrosion Science and Engineering |
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| Description |
In recent years, polymer amines such as polyaniline has been reported as an efficient corrosion inhibitor for iron in acid media. In this
paper, the performance of poly(diphenylamine) as corrosion inhibitor for iron in 0.5 M H2SO4 has been evaluated by potentiodynamic
polarization, linear polarization and electrochemical impedance spectroscopy and compared with the performance of the diphenylamine
monomer. It has been found that poly(diphenylamine) is an efficient inhibitor since the maximum efficiency of 96% has been observed at
very low concentration of 10 ppm where as the monomer has given an efficiency of 75% at 1000 ppm. Besides, poly(diphenylamine) has
been found to improve the passivation characteristics of iron in 0.5 M H2SO4. FTIR studies have shown that the poly(diphenylamine) is
strongly adsorbed on the iron surface and inhibits the corrosion effectively.
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| Publisher |
Elsevier
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| Date |
2005
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/102/1/051-2005.pdf
Jeyaprabha, C. and Sathiyanarayanan, S. and Phani, K.L.N. and Venkatachari, G. (2005) Investigation of the inhibitive effect of poly(diphenylamine) on corrosion of iron in 0.5 M H2SO4 solutions. Journal of Electroanalytical Chemistry, 585. pp. 250-255. |
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| Relation |
http://cecri.csircentral.net/102/
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