Electrosynthesis of Poly(ortho-phenetidine) Coatings on Steel and Investigation of Their Corrosion Protection Properties
| Autor: | Elaheh Allahyary, Yaser Jafari, Mehdi Shabani-Nooshabadi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Scanning electron microscope Organic Chemistry Metallurgy Metals and Alloys 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Electrosynthesis Electrochemistry 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Dielectric spectroscopy Corrosion Coating Electrode Materials Chemistry engineering Fourier transform infrared spectroscopy 0210 nano-technology Nuclear chemistry |
| Zdroj: | Protection of Metals and Physical Chemistry of Surfaces. 54:104-112 |
| ISSN: | 2070-206X 2070-2051 |
| DOI: | 10.1134/s2070205118010276 |
| Popis: | Poly(ortho-phenetidine) coatings on 304 stainless steel (304 SS) surface have been synthesized by using the galvanostatic technique. The electrosynthesized coatings were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), UV-visible absorption spectrometry and Scanning Electron Microscopy (SEM). The anticorrosion performances of poly(ortho-phenetidine) coatings were examined in 0.1 M HCl medium by the electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization technique. The corrosion rate of poly(ortho-phenetidine)-coated 304 SS was found ~10 times lower than bare 304 SS and corrosion potential increased from –0.29 V for uncoated 304 SS to –0.19 V versus Ag/AgCl (3 M KCl) for poly(ortho-phenetidine)-coated 304 SS electrode. Electrochemical measurements indicate that poly(ortho-phenetidine) coating has good inhibiting properties with an efficiency of ~93% at 1.5 mA cm–2 applied current density in acidic corrosive media. The results of this study obviously ascertain that the poly(ortho-phenetidine) has an outstanding potential to protect 304 SS against corrosion in an acidic environment. |
| Databáze: | OpenAIRE |
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