期刊
PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES
卷 54, 期 1, 页码 104-112出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S2070205118010276
关键词
304 stainless steel; poly(ortho-phenetidine); galvanostatic method; corrosion
资金
- University of Kashan [573591-4]
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 similar to 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 similar to 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.
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