The effect of electrolytes on the coating of polyaniline on mild steel by electrochemical methods and its corrosion behavior

Gupta, Dipak Kumar; Neupane, Shova; Singh, Sanjay; Karki, Nabin; Yadav, Amar Prasad

doi:10.1016/j.porgcoat.2020.106127

Cited by 16 publications

(13 citation statements)

References 46 publications

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“…The polarization potential of the steel treated by corrosion and descaling shifts positively and the corrosion current per unit area is reduced by nearly one order of magnitude, which is similar to the result of polyaniline coating on mild steel [25]. Therefore, the corrosion resistance of Cu-bearing steel can be significantly improved by the copper coating after corrosion and descaling treatment at 25 • C.…”

Section: Electrochemical Corrosion Testmentioning

confidence: 56%

Corrosion Behavior of Copper Bearing Steels and the Derived In-Situ Coating

Yan²,

Wang

et al. 2021

Metals

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Using a period immersion wet/dry cyclic corrosion test, in-situ copper-coated steels prepared by corroding copper-bearing steels were investigated in this study. The steel with a higher copper content (>3%) has a higher initial corrosion rate due to its obvious two-phase microstructure. The corrosion rates of all copper bearing steels tend to be stable after a certain time of corrosion. A copper-rich layer is formed between the matrix and the rust layer, which is due to the diffusion of copper from the rust layer to the metal surface. The copper’s stability under this corrosion condition led to the formation of a thin copper-rich film, which was uncovered after removing the rust by choosing appropriate descaling reagents. The copper coating was generated from the matrix itself during the corrosion process at 25 °C, which provided a new approach for producing in-situ composite materials without any bonding defect. It is found that the corrosion rate, corrosion time, and copper content in steel all affect the formation of copper-rich layer. In addition to the noble copper surface, the electrochemical corrosion test results show that the corrosion resistance of copper-coated steel has been significantly improved.

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Section: Electrochemical Corrosion Testmentioning

confidence: 56%

Corrosion Behavior of Copper Bearing Steels and the Derived In-Situ Coating

Yan²,

Wang

et al. 2021

Metals

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“…lower values of corrosion rate. 25,47 Seemingly, the coating with 1 wt% of dopant gave the lowest i corr and hence the lowest corrosion rate (0.041 mpy) as presented in Fig. 7, which indicates the best corrosion resistance behavior among all coatings.…”

Section: Anticorrosion Propertiesmentioning

confidence: 86%

Corrosion protection of aluminum alloy (AA2219-T6) using sulfonic acid-doped conducting polymer coatings

et al. 2022

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“…Earlier studies have shown that PANI inhibits corrosion through the barrier effect and electrochemical process of forming a passive layer of Fe(OH) 3 on the steel surface due to the oxidation of surface iron atoms. 17,18 In this study, the anticorrosion ability of PANI is further increased by the addition of mica nanoparticles due to the barrier effect provided by mica NPs towards corrosive agents.…”

Section: Introductionmentioning

confidence: 82%