Novel conducting polymer based composite coatings for corrosion protection of zinc

Bai, Xiaoxia; Tran, The Hai; Yu, Demei; Vimalanandan, Ashokanand; Hu, Xie; Rohwerder, Michael

doi:10.1016/j.corsci.2015.03.003

Cited by 36 publications

(21 citation statements)

References 30 publications

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“…However, an insulating layer will be formed at the PPy and metal interface when PPy is applied on non-noble metal surfaces, resulting in a low potential caused by electronic decoupling at the interface, which is unfavorable for protracted protection of metal [19,20]. To avoid such problem, CB can be employed as conductive spacers to ensure the electronic contact at the CPs/metal interface [21].…”

Section: Introductionmentioning

confidence: 99%

High Performance Anti-Corrosion Coatings of Poly (Vinyl Butyral) Composites with Poly N-(vinyl)pyrrole and Carbon Black Nanoparticles

Hao

Zhou

et al. 2018

Materials

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Zinc is widely used in battery negative electrodes and steel coatings for automotive industries. The anti-corrosion property of zinc is the most important factor determining the performance and lifetime of the products. In this paper, both size-controlled poly N-(vinyl)pyrrole (PNVPY) nanoparticles and carbon black (CB) nanoparticles were compounded with poly (vinyl butyral) (PVB) binder developing a series of composite coatings covered on the zinc substrates using a spin-coating technique. The morphologies of the surface and cross section of the PNVPY/CB/PVB coatings indicate that the PNVPY and CB nanoparticles are uniformly distributed in the matrix. The corrosion resistance of the composite coatings was tested by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization in a 3.5% NaCl solution. It is found that the coating with 1.9 wt.% PNVPY and 2.3 wt.% CB nanoparticles shows a remarkably high resistance value (Rc) and corrosion protection efficiency (99.99%). Meanwhile, the immersion results also reveal its superior corrosion resistance. It is considered that the nanoscale dispersion of PNVPY and carbon in PVB matrix and the strong interface action between the nanoparticles and PVB result in the uniform microstructure of the composites which endues the superior corrosion properties of the coatings.

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Section: Introductionmentioning

confidence: 99%

High Performance Anti-Corrosion Coatings of Poly (Vinyl Butyral) Composites with Poly N-(vinyl)pyrrole and Carbon Black Nanoparticles

Hao

Zhou

et al. 2018

Materials

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“…Involved in appropriate systems, PANI enables to minimize the risk for human health and damage to the environment [6]. PANI layers are obtained for a short time, building a physical barrier to the corrosive agents [7,8]. It has been proven that polyaniline is applied for the protection of stainless steel [9], iron [9,10], soft steel [11][12][13], copper [10], aluminum [14], and zinc [15].…”

Section: Introductionmentioning

confidence: 99%

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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“…PANI is one of the most promising electroconducting polymer additives and has great potential for corrosion protection, especially for passivation of defects in the coating . It has been investigated as an anticorrosion additive in coatings for the protection of different metals, such as stainless steel, mild steel, iron, copper, aluminum, and zinc …”

Section: Introductionmentioning

confidence: 99%

Corrosion protection of aluminum alloy by epoxy coatings containing polyaniline modified graphene additives

Yuan

Zhang

et al. 2019

Materials & Corrosion

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In the study, polyaniline/reduced-graphene oxide (PANI-RGO) composites, fabricated by loading 2, 5, and 8wt% graphene oxide, was prepared by in-situ emulsion polymerization and reduction. They are characterized by Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. Epoxy coatings adding PANI and PANI-RGO composites were coated on the surface of AA5083 Al alloy. The anticorrosion performance of the coatings is measured by electrochemical impedance spectroscopy and potentiodynamic polarization curve in 3.5wt% NaCl solution. The results demonstrate that the epoxy/PANI-RGO coating exhibits a better protection against AA5083 alloy corrosion compared with the epoxy/PANI coating.Enhancement of the passivation performance of PANI was obtained by the addition of RGO into epoxy/PANI coating system. K E Y W O R D SAA5083 Al alloy, anticorrosion, passivation, polyaniline/grapheme

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Novel conducting polymer based composite coatings for corrosion protection of zinc

Cited by 36 publications

References 30 publications

High Performance Anti-Corrosion Coatings of Poly (Vinyl Butyral) Composites with Poly N-(vinyl)pyrrole and Carbon Black Nanoparticles

High Performance Anti-Corrosion Coatings of Poly (Vinyl Butyral) Composites with Poly N-(vinyl)pyrrole and Carbon Black Nanoparticles

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

Corrosion protection of aluminum alloy by epoxy coatings containing polyaniline modified graphene additives

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