Synthesis and characterization of polypyrrole – TiO2 coatings on AISI 304 stainless steel

Blanco, M. X.; Pinzón, Carmen; Vergara, Sandra Judith García

doi:10.1088/1742-6596/1119/1/012029

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…Among these polymers, polypyrrole (PPy) has been extensively investigated due to its physicochemical stability, high conductivity, easy processability and relatively low cost [9]. Several studies have reported that the electrosynthesis of polypyrrole (PPy) films on pure iron [10,11], mild steel [12][13][14] and stainless steel [15][16][17][18] can effectively inhibit the corrosion of these materials. It has been proposed that PPy coatings protect metallic substrates through a mixed mechanism of isolation and charge transfer [18].…”

Section: Introductionmentioning

confidence: 99%

Electrosynthesis of a Duplex Coating Consisting of a Cerium-Based Layer and a Polypyrrole Film for the Corrosion Protection of AISI 304 Stainless Steel

Loperena

Lehr

Saidman

2021

J. Mater. Sci. Technol. Res.

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Duplex coating consisting of an inner cerium-based layer and polypyrrole (PPy) film topcoat was electrodeposited onto AISI 304 stainless steel. The cerium-based coating was electrodeposited in solutions containing cerium nitrate at 50 ºC. The polymeric outer layer was electropolymerized in the presence of sodium bis(2-ethylhexyl) sulfosuccinate (AOT). The electrosynthesis was done under potentiostat conditions. The coatings were characterized by scanning electron microscopy (SEM) and energy dispersive x-ray spectrometry (EDX). The morphology of the double-layered cerium polypyrrole film shows a granular structure with the presence of agglomerates of small grains. The anticorrosive performance of the coatings was evaluated in sodium chloride solution by linear polarization, open circuit measurements, and electrochemical impedance spectroscopy (EIS). Single films, cerium layer and PPy coating, and the duplex film all reduce the corrosion rate of AISI 304 stainless steel in NaCl solution. The duplex coating presents an improved corrosion resistance concerning the single films. The combination of the characteristics of the single layers is responsible for the superior corrosion protection efficiency of the double-layered cerium polypyrrole coating.

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Section: Introductionmentioning

confidence: 99%

Electrosynthesis of a Duplex Coating Consisting of a Cerium-Based Layer and a Polypyrrole Film for the Corrosion Protection of AISI 304 Stainless Steel

Loperena

Lehr

Saidman

2021

J. Mater. Sci. Technol. Res.

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PPy–TiO₂–phenylalanine composites as anticorrosive coatings electrodeposited over Fe–C steel surface in the marine environment

Pahuja

Malik

Saini

et al. 2020

Journal of Adhesion Science and Technology

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Synthesis and characterization of polypyrrole – TiO2 coatings on AISI 304 stainless steel

Cited by 2 publications

References 17 publications

Electrosynthesis of a Duplex Coating Consisting of a Cerium-Based Layer and a Polypyrrole Film for the Corrosion Protection of AISI 304 Stainless Steel

Electrosynthesis of a Duplex Coating Consisting of a Cerium-Based Layer and a Polypyrrole Film for the Corrosion Protection of AISI 304 Stainless Steel

PPy–TiO₂–phenylalanine composites as anticorrosive coatings electrodeposited over Fe–C steel surface in the marine environment

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Synthesis and characterization of polypyrrole – TiO2 coatings on AISI 304 stainless steel

Cited by 2 publications

References 17 publications

Electrosynthesis of a Duplex Coating Consisting of a Cerium-Based Layer and a Polypyrrole Film for the Corrosion Protection of AISI 304 Stainless Steel

Electrosynthesis of a Duplex Coating Consisting of a Cerium-Based Layer and a Polypyrrole Film for the Corrosion Protection of AISI 304 Stainless Steel

PPy–TiO2–phenylalanine composites as anticorrosive coatings electrodeposited over Fe–C steel surface in the marine environment

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PPy–TiO₂–phenylalanine composites as anticorrosive coatings electrodeposited over Fe–C steel surface in the marine environment