Hybrid Conducting Nanocomposites Coatings for Corrosion Protection

Riccardis, M.F. De; Martina, Virginia

doi:10.5772/57278

Cited by 5 publications

(3 citation statements)

References 110 publications

(113 reference statements)

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“…According to the literature sources it is well known that in recent years, several methodologies have been proposed for the application of PANI-based coatings [48]:…”

Section: Discussionmentioning

confidence: 99%

“…According to the literature sources it is well known that in recent years, several methodologies have been proposed for the application of PANI-based coatings [48]: The electrochemically deposited PANI exhibits a significant resistivity and has good anticorrosion properties, also in controlling pitting corrosion resulting from the permeation and breakdown of the protective coating [48].…”

Section: Discussionmentioning

confidence: 99%

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Electrochemical Obtaining and Corrosion Behavior of Zinc-Polyaniline (Zn-PANI) Hybrid Coatings

et al. 2019

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Hybrid zinc-based coatings with embedded polyaniline (PANI) particles in the metal matrix are obtained in a one-step process via electrodeposition on low-carbon steel plates. The aim is directly to use the inhibitor properties of polyaniline for improved protection against corrosion in chloride containing medium (5% NaCl solution). PANI-particles (concentration of 0.025 g/L) are added to the starting zinc electrolyte in dispersed form—the latter being obtained via oxidation polymerization in the presence of stabilizers (polyvinyl pyrrolidone (PVP) or colloidal SiO2). Electrodeposition conditions are equal to those for obtaining an ordinary zinc coating. The surface morphology of the hybrid coatings before and after corrosion treatment in the model medium is characterized with SEM. The influence of the incorporated PANI/PVP- or PANI/SiO2-particles on the protective properties of the coatings is evaluated by the application of electrochemical (potentiodynamic polarization, open-circuit potential, polarization resistance, cyclic voltammetry) as well as X-ray based (X-ray diffraction and X-ray photoelectron spectroscopy) methods. A discussion and some conclusions about the reasons for the improved corrosion resistance and protective ability of the hybrid coatings in that model medium are proposed.

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“…According to the literature sources it is well known that in recent years, several methodologies have been proposed for the application of PANI-based coatings [48]:…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Electrochemical Obtaining and Corrosion Behavior of Zinc-Polyaniline (Zn-PANI) Hybrid Coatings

et al. 2019

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“…However, the leaching of such compounds in coatings may cause serious ecological damage, and that encourages the development of corrosion inhibitor compounds that could be less impacting for the environment. Conductive polymers, such as polyaniline (PANI) and polypyrrole (PPy), are organic compounds that usually have a good corrosion stability when in contact with solution or/and in the dry state 9 . They also are a possible answer to the demand for "green" corrosion inhibitors to minimize the health risk to humans and damage to the environment [10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Study of the Efficiency of Polypyrrole/ZnO Nanocomposites as Additives in Anticorrosion Coatings

et al. 2015

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We synthesized (ZnO nanoparticles)/polypyrrole (ZnO_NPs/PPy) hybrid nanocomposites and used them as additives in an epoxy paint to protect SAE 1020 carbon steel from corrosion. The nanocomposites were obtained by chemical polymerization of pyrrole in aqueous solution and sodium dodecyl sulfate solution containing dispersed ZnO nanoparticles. We characterized the nanoparticles by infrared absorption spectrophotometry, X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). A large disparity in the distribution of ZnO particle sizes became evident from the TEM images, which also show the formation of hybrid nanocomposites consisting of polypyrrole coated ZnO nanoparticles. Electrochemical impedance spectroscopy (EIS) and open circuit potential (OCP) tests, which were performed on SAE 1020 carbon steel plates coated with epoxy and ZnO_NPs/PPy, have shown that epoxy paints have their efficiency as anticorrosive coatings significantly improved when ZnO_NPs/PPy hybrid nanocomposites are added to them.

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Conducting polyaniline nanocomposite-based paints for corrosion protection of steel

Sazou

Deshpande²

2016

Chem. Pap.

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Hybrid Conducting Nanocomposites Coatings for Corrosion Protection

Cited by 5 publications

References 110 publications

Electrochemical Obtaining and Corrosion Behavior of Zinc-Polyaniline (Zn-PANI) Hybrid Coatings

Electrochemical Obtaining and Corrosion Behavior of Zinc-Polyaniline (Zn-PANI) Hybrid Coatings

Study of the Efficiency of Polypyrrole/ZnO Nanocomposites as Additives in Anticorrosion Coatings

Conducting polyaniline nanocomposite-based paints for corrosion protection of steel

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