The characterisation of the coated layer at the interface carbon steel-natural salt water by impedance spectroscopy

Bousselmi, Latifa; Fiaud, C.; Tribollet, Bernard; Triki, E.

doi:10.1016/s0010-938x(97)00077-2

Cited by 70 publications

(49 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The Nyquist diagrams obtained consist in two time constants which are typical for organic metal-covering systems thus proving the physical process indicated by Bousselmi [45]. The time constants for the processes which occur in the layer of corrosion products for zinc are higher than those obtained for carbon steel.…”

Section: Discussionsupporting

confidence: 66%

“…When modelling the impedance data, we used an equivalent circuit which covered all the main variables which occur in the physical process, for which a model proposed by Bousselmi EIS characterisation of the layer of corrosion products [45] which had been efficient in dealing with carbon steel was used. Said model is outlined in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…However, over the last few years, great progress has been made using electro-chemical impedance which may be a useful tool in the characterisation (though not identification) of the layer of corrosion products. Some authors, such as Bousselmi et al [45] have used this technique to determine the layer of corrosion products on carbon steel test pieces submerged in seawater and have even given values of the thickness of each layer. There are other authors too who have carried out similar studies in conjunction with other metallographic techniques of analysis.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

EIS characterisation of the layer of corrosion products on various substrates in differing atmospheric environments

Rodríguez

Alvarez

Gonzalez³

2006

Materials & Corrosion

View full text Add to dashboard Cite

The layer of corrosion products forming on zinc in atmospheric environments of varying aggressivity have been characterised and compared with previous results obtained for carbon steel. The characteristics of said layers have been linked to the nature of the products found. Likewise, we have found that EIS is a useful tool towards characterising the layers of corrosion products of carbon steel and zinc. The equivalent circuit which gives the best fit of impedance data for both metals is type R(C(R(C(R(CR))))), where the Nyquist diagrams are composed of two time constants. It is observed that the value of the capacitance of the corrosion product layer (C pc ) diminishes as the time of exposure increases, which is directly related with an increase in the thickness of the corrosion product layer. Also, it is observed that when the nature of the corrosion products doesn't vary with the time of exposure, the decrease of the charge transfer resistance is related with the increase in the thickness of the corrosion product layer.

show abstract

Section: Discussionsupporting

confidence: 66%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

EIS characterisation of the layer of corrosion products on various substrates in differing atmospheric environments

Rodríguez

Alvarez

Gonzalez³

2006

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…This is due to the development of an adherent, protective layer formed on the steel [6][7][8][9]. In our previous work, the Cr and Cu compounds promote more or less protective rust layers on weathering steel in an aqueous condition, as they do with an atmospheric condition [10,11]. Accordingly, it can be expected that alloying with small amount of noble elements such as Cr, Cu and Ni provides a possibility for improving corrosion resistance in distribution system.…”

Section: Introductionmentioning

confidence: 95%

Effects of Cr, Cu, Ni and Ca on the corrosion behavior of low carbon steel in synthetic tap water

Choi

Shim

Kim

2005

Journal of Alloys and Compounds

117

View full text Add to dashboard Cite

“…The diffusion coefficient through the layer is almost independent of immersion time, 21 but can change with rotation rate, 22 which means that the direct effect of shear stresses due to the forced convection on the oxide layer can also contribute to the overall behavior depicted in Figure 6. The values of the diffusion factor (B) and the finite length diffusion (Y 0 ) are also shown in Figure 7.…”

Section: (2)mentioning

confidence: 99%

Electrochemical behavior of copper in drinking water: evaluation of dissolution process at low anodic overpotential

Ríos¹,

Calderón²,

Nogueira³

2011

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

O comportamento eletroquímico do cobre em água potável foi estudado por polarização potenciodinâmica e espectroscopia de impedância eletroquímica em até quatro dias depois de imersão em condições hidrodinâmicas diferentes. Os resultados de impedância foram interpretados usando modelos de circuito equivalente, os quais mostraram um aumento da espessura do filme com o tempo, que impede a difusão de espécies de cobre através da camada de óxido de cobre formada. Essa camada de óxido é maior em condição de estagnação. A baixos sobrepotenciais anódicos, os diagramas de impedância apresentam pelo menos quatro constantes de tempo que poderiam ser explicadas pela existência de diferentes pocessos faradaicos, a adsorção/dessorção de espécies intermediárias, processos de difusão e a formação de uma camada de óxido na superfície de cobre. Na região anódica, a resistência total à corrosão diminui, possivelmente devido à dissolução das espécies de cobre e ao aumento da difusão através da camada de óxido, principalmente sob condições hidrodinâmicas.The electrochemical behavior of copper in near-neutral aerated tap water was studied by potentiodynamic polarization and electrochemical impedance spectroscopy up to four days of immersion under different hydrodynamic conditions. The impedance results were interpreted by equivalent circuit that showed an increasing film thickness with time that hinders the diffusion of copper species across the oxide layer, which is larger in stagnating condition. At low anodic overpotential, copper impedance presents at least four time constants that could be explained by faradaic processes, adsorption/desorption of intermediate species, diffusion controlled process and oxide layer formation on copper surface. In the anodic region, the overall corrosion resistance decreases possibly due to the dissolution of copper species and the increase of diffusion across the oxide layer, mainly under hydrodynamic condition.

show abstract

The characterisation of the coated layer at the interface carbon steel-natural salt water by impedance spectroscopy

Cited by 70 publications

References 14 publications

EIS characterisation of the layer of corrosion products on various substrates in differing atmospheric environments

EIS characterisation of the layer of corrosion products on various substrates in differing atmospheric environments

Effects of Cr, Cu, Ni and Ca on the corrosion behavior of low carbon steel in synthetic tap water

Electrochemical behavior of copper in drinking water: evaluation of dissolution process at low anodic overpotential

Contact Info

Product

Resources

About