ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Conducting polyaniline/multi-wall carbon nanotubes composite paints on low carbon steel for corrosion protection: electrochemical investigations
Pravin P. Deshpande, Sanket S. Vathare, Shashikant T. Vagge, Elena Tomšík, and Jaroslav Stejskal
Department of Metallurgy and Materials Science, College of Engineering, Shivajinagar, 411005, Pune, India
Abstract: The coaxial coating of multi-wall carbon nanotubes (MWCNT) with poly(aniline) (PANI) was synthesised and a paint was prepared containing conducting PANI-MWCNT composite. The corrosion protection performance was assessed by open circuit potential measurements, potentiodynamic polarisation, and electrochemical impedance spectroscopy. The corrosion rate of low-carbon steel coated with 1.5 mass % of PANI-MWCNT-based paint in 3.5 mass % sodium chloride solution was found to be 0.037 mm y−1, about 5.2 times lower than that of unpainted low-carbon steel and 3.6 times lower than that of epoxy painted steel.
Keywords: corrosion – polyaniline – conducting polymer – carbon nanotubes
Full paper is available at www.springerlink.com.
Chemical Papers 67 (8) 1072–1078 (2013)
Friday, February 26, 2021