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Effect of thermal annealing on the corrosion protection of stainless steel by poly(3-octyl thiophene) |
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| Authors: | U. Leon-Silva M.E. Nicho J.G. Chacon-Nava |
| Affiliation: | a Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chih, Mexico b Centro de Investigación en Ingeniería y Ciencias Aplicadas, UAEM, Av. Universidad 1001, Col. Chamilpa, 62209-Cuernavaca, Morelos, Mexico c Instituto de Investigaciones Eléctricas, Gerencia de Procesos Termicos, Av. Reforma # 113, 62490-Temixco, Morelos, Mexico |
| 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. |
| Keywords: | A. Poly(3-octyl thiophene) B. Electrochemical impedance C. Alkaline Corrosion |
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