Effect of Different Dopants in Films TEOS/MPTS Used to Protect the Carbon Steel

F.S. Silva; P.H. Suegama; W.P. Silva; A.W. Rinaldi; N.L.C. Domingues; M.Y. Matsumoto; L.G. Salazar

doi:10.4028/www.scientific.net/MSF.805.167

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HomeMaterials Science ForumMaterials Science Forum Vol. 805Effect of Different Dopants in Films TEOS/MPTS...

Effect of Different Dopants in Films TEOS/MPTS Used to Protect the Carbon Steel

Abstract:

Schiff bases m-toluene N-Salicylideneaniline (m-TOL), (B) m-nitro-N- Salicylideneaniline (m-NTR) and (C) m-methoxy-N-salicylideneaniline (m-MTX) and cerium ions were studied added to 3.5 wt.% NaCl solution and added to the hybrid film based tetraethoxysilane (TEOS) e 3-methacryloxypropyltrimethoxysilane (MPTS). The polarization measurements showed lower current densities for the steel in NaCl with m-MTX, indicating that the m-MTX may be acting as an inhibitor. The hybrid films were doped with the m-MTX, Ce (III) or Ce (IV). Electrochemical measurements of open circuit potential (E_OC), polarization curves and electrochemical impedance spectroscopy (EIS), were used to evaluate the corrosion behavior of the hybrid films. According Electrochemical Impedance measurements, all hybrid films, provided protection to the carbon steel. The films doped with Ce (IV), provided greater protection than the other, which indicates that this is the most suitable dopant for use in films.

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Periodical:

Materials Science Forum (Volume 805)

Pages:

167-171

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.805.167

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Online since:

September 2014

Authors:

F.S. Silva*, P.H. Suegama, W.P. Silva, A.W. Rinaldi, N.L.C. Domingues, M.Y. Matsumoto, L.G. Salazar

Keywords:

Carbon Steel, Corrosion, Schiff Bases

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