The corrosion protection of mild steel by polypyrrole/polyphenol multilayer coating

Tüken, Tunç; Arslan, Gülşen; Yazıcı, Birgül; Erbil, M.

doi:10.1016/j.corsci.2004.03.003

Cited by 87 publications

(39 citation statements)

References 18 publications

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“…This includes the charge transfer resistance (R ct ) corresponding to the metal/solution interface formed at the bottom of the pores (Fig. 2), the oxide film resistance (R o ) and the diffuse layer resistance (R d ) [10,11]. Warburg impedance was not As seen in the Nyquist diagrams of sample S1 in Fig.…”

Section: Corrosion Testsmentioning

confidence: 96%

Corrosion behavior of ferritic stainless steel alloyed with different amounts of niobium in hydrochloric acid solution

Demirören

2008

J Appl Electrochem

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The corrosion behavior of stainless steel alloys containing corrosion-resistant elements was investigated. Ferritic stainless steel (FSSs) electrodes were synthesized by applying a scan rate of 1 mV s -1 . Stainless steels were used unalloyed and alloyed with about 0.5, 1, and 3 wt% elemental Nb. The samples were obtained from casting and forging. The samples were classified into three groups. In the first group, samples were unhomogenized and remained in production condition. In the second and third groups, samples were exposed to homogenization at 1,100°C for 30 min or 180 min, respectively, and then quenched. The corrosion performance of the FSSs was investigated in 0.3 M HCl acid solution using electrochemical impedance spectroscopy (EIS). Corrosion resistance was calculated using the Stearn-Geary equation. SEM investigations of samples immersed in 0.3 M HCl acid solution for 60 and 360 min were performed. SEM micrographs showed generalized pitting. Consequently, it was determined that niobium has a beneficial effect on the corrosion resistance of FSS since niobium reacts with carbon to form stable carbides.

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Section: Corrosion Testsmentioning

confidence: 96%

Corrosion behavior of ferritic stainless steel alloyed with different amounts of niobium in hydrochloric acid solution

Demirören

2008

J Appl Electrochem

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“…The process is driven by the anodic dissolution of metal through the pores of the coatings [23]. It is proposed that the charge transfer occurring between the metal and polymer coating can accelerate the oxidation of freshly produced water soluble ferrous (Fe 2þ ) compounds to protective (non-soluble) ferric (Fe 3þ ) oxides [57]; thus soluble or non-soluble compounds will be accumulated in the pinhole defects resulting in an inhibition of metal corrosion. At the same time, the dedoping process of PPy will also cause release of DBS À , which also makes contribution to the protection of SS.…”

Section: Corrosion Performance Of Ppy Coated Ss In Nacl Solutionmentioning

confidence: 99%

Two‐step electrosynthesis of polypyrrole for corrosion protection of stainless steel

Zhu

Huang

2009

Materials & Corrosion

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Smooth polypyrrole (PPy) films were successfully electrosynthesized on a stainless steel (SS, 1Cr18Ni9) surface by a selfcatalytic two-step process. SS substrate dissolution during PPy electrosynthesis was effectively depressed. The redox properties and corrosion behavior of PPy film coated SS electrodes were investigated by cyclic voltammetry, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization. The reduction of PPy was found to include two reaction processes: an anion dedoping process and a cation insertion process. The PPy film was found to lose its electroactivity when polarized at high potentials due to peroxidation. EIS of SS/PPy mainly corresponds to PPy film response and charge transfer resistance decreases as film thickness increases, indicating that SS corrosion can be inhibited effectively by the PPy film.

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“…Tü ken et al 8 deposited by electrochemical method a polyphenol (PPhe) film on a polypyrrole coated mild steel substrate (MS/PPy). The corrosion performance of the above multilayer coated mild steel in comparison to PPy coated mild steel was investigated, in a 0.05 M H 2 SO 4 solution.…”

Section: Introductionmentioning

confidence: 99%

Composite multilayered coatings on mild steel

et al. 2010

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A composite multilayered coating which consisted of an electrodeposited Zn-Fe alloy layer, a zinc phosphate conversion layer, and one, two, or three organic layers was deposited on a mild steel substrate. The adhesion between these multilayered coating and the mild steel substrate was studied with the aid of a scratch testing technique. Observation of the worn surface of different multilayered coatings was performed with the aid of metallurgical microscopy. The same multilayered coatings were examined with FTIR spectroscopy and X-ray diffraction techniques. Finally, the corrosion behavior of bare and multilayered coated mild steel in 0.1 M NaCl solution (pH = 5.5, T = 25°C) was studied.

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The corrosion protection of mild steel by polypyrrole/polyphenol multilayer coating

Cited by 87 publications

References 18 publications

Corrosion behavior of ferritic stainless steel alloyed with different amounts of niobium in hydrochloric acid solution

Corrosion behavior of ferritic stainless steel alloyed with different amounts of niobium in hydrochloric acid solution

Two‐step electrosynthesis of polypyrrole for corrosion protection of stainless steel

Composite multilayered coatings on mild steel

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