Electrodeposition mechanism, adhesion and corrosion performance of polypyrrole and poly(N-methylpyrrole) coatings on steel substrates

Su, Weiji; Iroh, Jude O.

doi:10.1016/s0379-6779(99)00306-9

Cited by 105 publications

(52 citation statements)

References 10 publications

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“…In the last decades, conductive polymers (CPs) such as polyaniline, polypyrrole, and their derivatives have been widely investigated as corrosion-resistant coatings [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

The effect of ultrasonic irradiation during electropolymerization of polypyrrole on corrosion prevention of the coated steel

2008

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Section: Introductionmentioning

confidence: 99%

The effect of ultrasonic irradiation during electropolymerization of polypyrrole on corrosion prevention of the coated steel

2008

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“…Polypyrrole (Ppy) is one of the most promising conducting polymers, in this respect, because of its high conductivity, stability and ease of synthesis. In fact several works have appeared [2][3][4][5][6][7][8][9][10][11][12][13] dealing with the protection of corrosion susceptible metals by electrochemically generated Ppy. However, comparatively few studies have been devoted to the study of copper protection.…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole electrodeposited on copper from an aqueous phosphate solution: Corrosion protection properties

2007

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Highly adherent and homogenous polypyrrole films were electrodeposited at copper from a dihydrogen phosphate solution. The polypyrrole films were electrosynthesized in the overoxidized state by cycling the copper electrode from -0.4 to 1.8 V (SCE) in a pyrrole-containing phosphate solution. The growth of the polypyrrole films was facilitated by the initial oxidation of the copper electrode in the phosphate solution to generate a mixed copper-phosphate, copper oxide or hydroxide layer. This layer was sufficiently protective to inhibit further dissolution of the copper electrode and sufficiently conductive to enable the electropolymerization of pyrrole at the interface, and the generation of an adherent polypyrrole film.Potentiodynamic polarization measurements, Tafel analyses and open-circuit potential data revealed that the polypyrrole coating effectively protects the copper substrate from corrosion in a chloride solution. However, the corrosion protection properties were reduced with longer immersion times.

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“…The values of the E corr , i corr , Tafel slopes b a , b c and polarization resistance (R p ), corrosion rate (CR) and total porosity (P) are summarized in Table 1. The corrosion rate (CR) was calculated by using the following expression: 22 CR (mm/year) = 3.268´10 3 I corr EW/r…”

Section: Potentiodynamic Polarization Measurementsmentioning

confidence: 99%

Application of Polytyramine Nanoparticles to the Corrosion Protection of Copper

Farhadi

Banisaeid

Jamali

et al. 2015

J Chinese Chemical Soc

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Electrochemical polymerization of tyramine was achieved on copper electrode surface from tyramine in 0.3 M oxalic acid (pH = 1.2) solution by using cyclic voltammetry technique. The formation of polytyramine nanoparicles (PTN) were characterized by cyclic voltammetry (CV), fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy and scanning electron microscopy (SEM). The corrosion behavior of PTN coated copper was investigated by means of the change of open circuit potential with exposure time (E ocp -t), electrochemical impedance spectroscopy (EIS) and anodic polarization curves in 3.5% NaCl solutions at room temperature. The obtained results showed the shift of corrosion potential toward positive values for electropolymerized copper and a significant decrease in corrosion current and corrosion rate in comparison with bare copper, so that the PTNs coating could be used as an important protection against corrosion of copper.

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Electrodeposition mechanism, adhesion and corrosion performance of polypyrrole and poly(N-methylpyrrole) coatings on steel substrates

Cited by 105 publications

References 10 publications

The effect of ultrasonic irradiation during electropolymerization of polypyrrole on corrosion prevention of the coated steel

The effect of ultrasonic irradiation during electropolymerization of polypyrrole on corrosion prevention of the coated steel

Polypyrrole electrodeposited on copper from an aqueous phosphate solution: Corrosion protection properties

Application of Polytyramine Nanoparticles to the Corrosion Protection of Copper

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