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    Preparation and Corrosion Inhibition of Single and Biphase Composite Coating Based on PEDOT in 0.1M NaOH

    Year: 2019

    Journal: Int. J. Electrochem. Sci., Volume 14, MAY, page 4828–4837

    Authors: Zhang, Shengjian; Li, Min; Zhai, Lijun

    Keywords: Stainless steel; poly(3,4-ethylenedioxythiophene); slippery liquid-infused porous surfaces; perfluorinated lubricant; corrosion inhibition

    In this study, a compact poly(3,4-ethylenedioxythiophene) (PEDOT) film was deposited onto the surface of stainless steel (SS) to prepare PEDOT/SS by chronoamperometry. The porous polymer film is highly hydrophobic with a water contact angle of similar to 140 degrees after the modification by fluorinate agents. Perfluorinated lubricant/PEDOT/SS (PFL/PEDOT/SS) was prepared by the infusion of perfluorinated lubricant. The corrosion inhibition properties of SS, PEDOT/SS and PFL/PEDOT/SS in acidic, neutral and alkaline solutions were investigated by electrochemical impedance spectroscopy and potentiodynamic polarization techniques. It is found that the PEDOT/SS matrix has a compact surface, and the biphase composites show significant corrosion inhibition effects on SS in alkaline solutions.
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