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Pitting corrosion protection of low nickel stainless steel by electropolymerized conducting polymer coating in 0.5 M NaCl solution
T Dhanabal G Amirthaganesan J Ravichandran
Volume 34 Issue 3 June 2011 pp 563-569
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https://www.ias.ac.in/article/fulltext/boms/034/03/0563-0569 -
Keywords
Stainless steel ;IR spectroscopy ;cyclic voltammetry ;pitting corrosion ;EIS ;SEM. -
Abstract
Conducting polymers of polyaniline (PANi) and poly(o-phenylenediamine) (PoPD) were electropolymerized by cyclic voltammetric technique on low nickel stainless steel (LN SS) in H2SO4 solution containing aniline and 𝑜-phenylenediamine monomers. The coatings were characterized by Fourier transform infrared spectroscopy, UV-visible and scanning electron microscopic techniques and the results are discussed. The corrosion protective properties of PANi and PoPD coatings on LN SS in 0.5 M NaCl were evaluated using potentiodynamic polarization and electrochemical impedance spectroscopic (EIS) techniques. The potentiodynamic polarization and electrochemical impedance spectroscopic results indicate that the PoPD coating inhibits the corrosion of LN SS in 0.5 M NaCl solution more effectively than PANi.
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Author Affiliations
T Dhanabal1 G Amirthaganesan1 J Ravichandran1
- Post Graduate and Research Department of Chemistry, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore 641 020, India
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Dates
- Published
- June 2011
- Manuscript received
- 25 August 2010
- Manuscript revised
- 28 October 2010
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