Effect of thermal annealing on the corrosion protection of stainless steel by poly(3-octyl thiophene)
By Leon-Silva, U.; Gonzalez-Rodriguez, J.G.; Nicho, M.E.; Salinas-Bravo, V.M.; Chacon-Nava, J.G. & Martinez-Villafañe, A.
Published in Corrosion Science
NULL
2010
Abstract
Poly(3-octyl thiophene) (P3OT) coatings have been chemically deposited by drop casting onto 304-type stainless steel. P3OT films were thermally annealed at 55, 80 and 100 °C in air during 30 h and their corrosion resistance was estimated by using polarization curves, linear polarization resistance (LPR), and electrochemical impedance spectroscopy measurements, EIS. P3OT films decreased the corrosion rate of the substrate by at least one order of magnitude, although the best corrosion protection was given by annealing it at 100 °C whereas the worst corrosion protection was given by annealing the coating at 80 °C.
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