An electrochemical impedance spectroscopy study of reactions at the metal/coating interface

Mansfeld, F.; Jeanjaquet, S.; Kendig, M.

doi:10.1016/0010-938x(86)90037-5

Cited by 105 publications

(58 citation statements)

References 5 publications

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“…f Pristine (inoculated) refers to the pristine coupons exposed to the D. desulfuricans inoculated SSMB medium. Yuan et al: Grafting of Antibacterial Polymers represents the extent of ionic conduction through a polymer in an electrolytic environment, and is commonly used as a criterion for assessing the extent of corrosion protection derived from the organic coatings, while the constant phase elements (CPE) of coating, Q c , is used to substitute coating capacitance, C c , by taking into account of the phenomena related to the heterogeneous surface and diffusion process (Mansfeld et al, 1986;Yuan et al, 2007).…”

Section: Anticorrosion Behavior Of the Surface-functionalized Couponsmentioning

confidence: 99%

“…11). ECC (a) is used to fit the impedance spectra of coupons with a compact surface film, ECC (b) is used to model the impedance spectra of coupons with porous and non-protective surface film, while ECC (c) has been widely used to estimate the barrier, protection and degradation of the polymer coatings (Mansfeld et al, 1986). In ECC (c), the pore resistance (R po ) Table II.…”

Section: Anticorrosion Behavior Of the Surface-functionalized Couponsmentioning

confidence: 99%

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Grafting of antibacterial polymers on stainless steel via surface‐initiated atom transfer radical polymerization for inhibiting biocorrosion by Desulfovibrio desulfuricans

Yuan¹,

Xu²,

Pehkonen³

et al. 2009

Biotech & Bioengineering

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To enhance the biocorrosion resistance of stainless steel (SS) and to impart its surface with bactericidal function for inhibiting bacterial adhesion and biofilm formation, well-defined functional polymer brushes were grafted via surface-initiated atom transfer radical polymerization (ATRP) from SS substrates. The trichlorosilane coupling agent, containing the alkyl halide ATRP initiator, was first immobilized on the hydroxylated SS (SS-OH) substrates for surface-initiated ATRP of (2-dimethylamino)ethyl methacrylate (DMAEMA). The tertiary amino groups of covalently immobilized DMAEMA polymer or P(DMAEMA), brushes on the SS substrates were quaternized with benzyl halide to produce the biocidal functionality. Alternatively, covalent coupling of viologen moieties to the tertiary amino groups of P(DMAEMA) brushes on the SS surface resulted in an increase in surface concentration of quaternary ammonium groups, accompanied by substantially enhanced antibacterial and anticorrosion capabilities against Desulfovibrio desulfuricans in anaerobic seawater, as revealed by antibacterial assay and electrochemical studies. With the inherent advantages of high corrosion resistance of SS, and the good antibacterial and anticorrosion capabilities of the viologen-quaternized P(DMAEMA) brushes, the functionalized SS is potentially useful in harsh seawater environments and for desalination plants.

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Section: Anticorrosion Behavior Of the Surface-functionalized Couponsmentioning

confidence: 99%

Section: Anticorrosion Behavior Of the Surface-functionalized Couponsmentioning

confidence: 99%

Grafting of antibacterial polymers on stainless steel via surface‐initiated atom transfer radical polymerization for inhibiting biocorrosion by Desulfovibrio desulfuricans

Yuan¹,

Xu²,

Pehkonen³

et al. 2009

Biotech & Bioengineering

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“…It could be derived from this decrease that the rate of anodic dissolution was much retarded, in comparison to that of the cathodic hydrogen evolution. The data obtained also suggest that the inhibitor acts as mixed type inhibitor, because it is enhancing both the cathodic and anodic processes [34][35]. The values of Ecorr shift to less negative values with the increase in the inhibitor's concentration.…”

Section: Electrochemical Measurementsmentioning

confidence: 61%

Corrosion Inhibition of Aluminum by Psidium Guajava Seeds in HCl Solution

Sharma¹,

Sharma²

2016

Port. Electrochim. Acta

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The corrosion inhibition and adsorption of ethanol extracts of Psidium guajava seeds (EEPgS), for aluminum in 0.5 N HCl solutions, were investigated using conventional weight loss, FTIR spectroscopy and SEM analysis techniques. The results showed that EEPgS performed well as inhibitor for the corrosion of aluminum in hydrochloric acid media. FTIR results showed that the inhibition mechanism was by adsorption process, through the functional groups present in the extract. Inhibition efficiency increased with increasing concentration of the plant extract, but decreased with the temperature rise. The weight loss data were fitted into a number of isotherms, though Langmuir model was found to be the best fit. The SEM photographs confirmed the protection offered by the extract on the surface of the metal.Keywords: Psidium guajava; aluminum; corrosion; inhibitor; adsorption. IntroductionIndustrial processes such as prickling and acid cleaning often involve contact between a metal and aggressive solution, consequently, the metal is prone to corrosion. In order to reduce the menace due to corrosion of industrial installations, several steps have been adopted. However, one of the best options available for protecting metals against corrosion involves the use of corrosion inhibitors [1][2]. The majority of well-known inhibitors are organic compounds containing hetero atoms, such as O, N, S, and multiple bonds, which allow an adsorption on the metal surface [3]. These compounds adsorb on metal surface and block the active surface sites to reduce the corrosion rate. Adsorption may take place by four different mechanisms through organic molecules at the metal/solution interface: (a) electrostatic attraction between the charged molecules and the charged metal, (b) interaction of uncharged electron pairs in

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“…Electrochemical impedance spectroscopy (EIS) is a very powerful tool in coating analysis. EIS data can predict the quality of corrosion protection, film porosity, and solution absorption into the coating and film characteristics [18,19]. EIS After measuring the open circuit potential, potentiodynamic polarization curves were obtained with a 60 mV/min scan rate in ?250 to -250 mV potential range.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Excellent Anticorrosion Behavior of Ruta Graveolens Extract (RGE) for Mild Steel in Hydrochloric Acid: Electro Analytical Studies on the Effect of Time, Temperature, and Inhibitor Concentration

2016

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The corrosion inhibition behavior of Ruta graveolens extract (RGE) for mild steel in 1 M HCl is studied using gravimetric and electrochemical techniques. 1-4 V/V% RGE is added to the corrosive media and analyzed. Gravimetric measurements conducted at different time intervals reveal the potential activity of RGE in the system investigated. RGE exhibits 95 % inhibition efficiency in the investigated system for 7 days of exposure time. Electrochemical impedance spectroscopic studies show that mild steel is protected 98 % from corrosion in 1 M HCl in the presence of RGE. Potentiodynamic polarization study agrees this observation showing 99 % inhibition efficiency and also reveals the mixed type inhibition behavior of RGE. One of the active constituents of Ruta graveolens, Rutin is also monitored for its inhibition behavior and is found to be active. The theoretical parameters obtained for rutin also stands for the good inhibition potential of the extract. Both RGE and Rutin show a decrease in inhibition efficiency as the temperature raised. Adsorption behavior of RGE is according to Langmuir isotherm and that of Rutin obeys Temkin isotherm.

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An electrochemical impedance spectroscopy study of reactions at the metal/coating interface

Cited by 105 publications

References 5 publications

Grafting of antibacterial polymers on stainless steel via surface‐initiated atom transfer radical polymerization for inhibiting biocorrosion by Desulfovibrio desulfuricans

Grafting of antibacterial polymers on stainless steel via surface‐initiated atom transfer radical polymerization for inhibiting biocorrosion by Desulfovibrio desulfuricans

Corrosion Inhibition of Aluminum by Psidium Guajava Seeds in HCl Solution

Excellent Anticorrosion Behavior of Ruta Graveolens Extract (RGE) for Mild Steel in Hydrochloric Acid: Electro Analytical Studies on the Effect of Time, Temperature, and Inhibitor Concentration

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