Evaluation of corrosion protection performance of poly(o-ethyl aniline) coated copper by electrochemical impedance spectroscopy

Shinde, Vikas; Patil, Pradip

doi:10.1016/j.mseb.2009.11.008

Cited by 40 publications

(19 citation statements)

References 16 publications

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“…The passivation of copper in oxalate and hydrogen carbonate solutions has already been studied [39][40][41][42][43][44][45] and a summary can be found in [38]; the passivated electrode will be referred to as Cu/oxalate or Cu/Na 2 C 2 O 4 and as Cu/hydrogen carbonate or Cu/NaHCO 3 below. The formation of the polymer films on passivated copper electrodes was carried out by electropolymerisation of the monomer using potential cycling, as described in the experimental section.…”

Section: Electropolymerisationmentioning

confidence: 99%

Polyphenazine films as inhibitors of copper corrosion

Romeiro

Gouveia‐Caridade

Brett

2013

Journal of Electroanalytical Chemistry

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The polyphenazines poly(brilliant cresyl blue) (PBCB), poly(Nile blue A) (PNB) and poly(safranine T) (PST) have been investigated as corrosion protection films on copper electrodes by open circuit measurements, Tafel plots and electrochemical impedance spectroscopy, complemented by scanning electron microscopy. Pure copper electrodes were initially passivated in sodium oxalate or hydrogen carbonate solutions, to inhibit copper dissolution at potentials where phenazine monomer oxidation occurs, before electropolymerization by potential cycling. The corrosion inhibition of these films was tested in 0.10 M KCl solution. It was found that, after long immersion times, the best protection efficiency was with PNB films formed on copper passivated in sodium hydrogen carbonate solution.

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Section: Electropolymerisationmentioning

confidence: 99%

Polyphenazine films as inhibitors of copper corrosion

Romeiro

Gouveia‐Caridade

Brett

2013

Journal of Electroanalytical Chemistry

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“…Figure 1 shows the CPP curves obtained for iron (1) Fe-36% Ni and (2) Fe-45% Ni immersed in 1.0 M HCl solutions for 2400 s before measurements. The values of cathodic Tafel ( ) slope, corrosion potential ( Corr ), anodic Tafel ( ) slope, corrosion current density ( Corr ), polarization resistance ( ), and corrosion rate ( Corr ) that were obtained from the CPP curves are depicted in Table 1, where the values of Corr and Corr were obtained from the extrapolation of anodic and cathodic Tafel lines located next to the linearized current regions [24][25][26][27][28]. The values of were obtained from the polarization curves using the following equation as reported in the previous studies [24][25][26][27][28] Moreover, the values of corrosion rate ( Corr ) were obtained as follows [25]:…”

Section: Resultsmentioning

confidence: 99%

Effect of Nickel Content on the Corrosion Resistance of Iron-Nickel Alloys in Concentrated Hydrochloric Acid Pickling Solutions

Alharthi

Sherif

Abdo

et al. 2017

Advances in Materials Science and Engineering

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The effect of Ni content on the resistance against corrosion of Fe-36% Ni and Fe-45% Ni alloys in 1 M hydrochloric acid pickling solution was reported. Various electrochemical and spectroscopic techniques such as potentiodynamic cyclic polarization (CPP), open-circuit potential (OCP), electrochemical impedance spectroscopy (EIS), potentiostatic current-time (PCT), and scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) have been employed. CPP measurements indicated that the corrosion current and corrosion rate recorded lower values for the alloy that had higher nickel content. OCP curves proved that the presence of high Ni content shifts the absolute potential to the positive potential direction. EIS results revealed that the surface and polarization resistances were much higher for the alloy with higher Ni content. PCT curves also showed that the absolute currents were lower for Fe-45% Ni alloy. All results were in good agreement with others and confirmed clearly that the corrosion resistance in HCl solutions for Fe-45% Ni alloy was higher than that obtained for Fe-45% Ni alloy.

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“…Compared with the γ‐TiAl substrate (Fig. a), the capacitive loop diameter of the Ta coating samples are slightly higher than that of the γ‐TiAl substrate, which means better corrosion resistance of oxide films toward a specific medium …”

Section: Resultsmentioning

confidence: 99%

Corrosion behavior of tantalum alloying on γ‐TiAl by double‐glow plasma surface metallurgy technique

Liu

Zhang

Wei

et al. 2017

Surface & Interface Analysis

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The Ta coating with corrosion resistance is grown on the γ-TiAl substrate by double-glow plasma surface metallurgy technique, followed by the electrochemical test in 10 wt%, 20 wt% HCl and 10 wt%, 40 wt% H 2 SO 4 solution. The data of nanohardness and elastic modulus are collected by the nanoindention test. The adhesion strength of Ta coating is investigated by means of the scratch test. The study of corrosion resistance is performed using potentiodynamic polarization and electrochemical impedance spectroscopy and measured by SEM and X-ray diffraction. Results highlight that the Ta coating is tightly bonded to the γ-TiAl substrate, consisting of the deposition layer and diffusion layer. Experimental data indicate that the Ta coating presents excellent corrosion resistance, which is confirmed by the high values of polarization resistance (R p ) and the low values of corrosion current density (i corr ). The surface nanohardness of the Ta coating is improved from 3.41 to 7.29 GPa, nearly twice of that of the substrate. The Ta 2 O 5 formed on the coating is able to hold back the penetration of adverse ions inwardly, owing to its dense structure and adhesion effect.

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Evaluation of corrosion protection performance of poly(o-ethyl aniline) coated copper by electrochemical impedance spectroscopy

Cited by 40 publications

References 16 publications

Polyphenazine films as inhibitors of copper corrosion

Polyphenazine films as inhibitors of copper corrosion

Effect of Nickel Content on the Corrosion Resistance of Iron-Nickel Alloys in Concentrated Hydrochloric Acid Pickling Solutions

Corrosion behavior of tantalum alloying on γ‐TiAl by double‐glow plasma surface metallurgy technique

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