Title :
Evaluation of PPy-TiO2 composite coatings for corrosion protection of mild steel
Author :
Palraj, S. ; Maruthan, K. ; Muthukrishnan, S.
Author_Institution :
Central Electrochem. Res. Inst., Karaikudi, India
Abstract :
The semiconducting polymer and inorganic metal oxide composites composed of pol pyrrole /titanium dioxide (PPy/TiO2) were synthesized by sol-gel techniques. The products were characterized by FT-IR, Scanning electron microscopy (SEM), thermo gravimetric differential thermal analysis (TG-DTA) and XRD (X-ray diffraction) techniques. The corrosion performance of polypyrrole-titanium oxide composite incorporated epoxy-polyamide coatings on mild steel was evaluated by salt spray test and electrochemical impedance spectroscopy (ElS).The results showed that 2% PPy-TiO2 composite incorporated epoxy-polyamide coating exhibits better corrosion protection than other systems. The glass transition temperature of PPY-TiO2 composite was found to be 353Kand the decomposition temperature was noticed at 573 Kfrom TG- DTA studies.
Keywords :
Fourier transform spectra; X-ray diffraction; carbon steel; conducting polymers; corrosion; corrosion protection; differential thermal analysis; electrochemical impedance spectroscopy; glass transition; infrared spectra; organic-inorganic hybrid materials; pyrolysis; scanning electron microscopy; sol-gel processing; spray coatings; titanium compounds; wide band gap semiconductors; FTIR spectroscopy; Fourier transform infrared spectrosopy; SEM; TG-DTA; X-ray diffraction; XRD; anatase titanium dioxide; corrosion protection; decomposition temperature; electrochemical impedance spectroscopy; epoxy-polyamide coatings; glass transition; mild steel; salt spray testing; scanning electron microscopy; semiconducting polypyrrole-titanium dioxide composite coatings; sol-gel method; temperature 573 K; thermogravimetric-differential thermal analysis; wide band gap semiconductors; Microscopy; Paints; Steel; X-ray diffraction; EIS; Salt spray testing; Sol-gel technique; TG-DTA; XRD;
Conference_Titel :
Nanoscience, Engineering and Technology (ICONSET), 2011 International Conference on
Conference_Location :
Chennai
Print_ISBN :
978-1-4673-0071-1
DOI :
10.1109/ICONSET.2011.6167909
