Physico-chemical characterization of corrosion layers formed on iron in a sodium carbonate-bicarbonate containing environment

Blengino, J. M.; Keddam, M.; Labbé, Jérôme; Robbiola, Luc

doi:10.1016/0010-938x(94)00160-8

Cited by 72 publications

(41 citation statements)

References 20 publications

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“…With respect to the formation and the properties of siderite, siderite (FeCO 3 ) is known as a ferrous mineral, widespread on earth and forming in anoxic environments [12], and the retention properties of pure siderite in aqueous solution are experimentally difficult to study because its surface tends to quickly oxidize under atmospheric conditions [13]. However, compared with traditional methods, there are two reliable methodologies, i.e., the density functional theory (DFT) and the atomic force microscopy (AFM), have advantages of detecting atomic-scale phenomena which cannot be fulfilled by current lab tests.…”

Section: Introductionmentioning

confidence: 99%

Density Functional Theory and Atomic Force Microscopy Study of Oleate Functioned on Siderite Surface

Zhang

Yuan

et al. 2018

Minerals

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Abstract:Efficiently discovering the interaction of the collector oleate and siderite is of great significance for understanding the inherent function of siderite weakening hematite reverse flotation. For this purpose, investigation of the adsorption behavior of oleate on siderite surface was performed by density functional theory (DFT) calculations associating with atomic force microscopy (AFM) imaging. The siderite crystal geometry was computationally optimized via convergence tests. Calculated results of the interaction energy and the Mulliken population verified that the collector oleate adsorbed on siderite surface and the covalent bond was established as a result of electrons transferring from O1 atoms (in oleate molecule) to Fe1 atoms (in siderite lattice). Therefore, valence-electrons' configurations of Fe1 and O1 changed into 3d 6.51 4s 0.37 and 2s 1.83 2p 4.73 from 3d 6.21 4s 0.31 and 2s 1.83 p 4.88 correspondingly. Siderite surfaces with or without oleate functioned were examined with the aid of AFM imaging in PeakForce Tapping mode, and the functioned siderite surface was found to be covered by vesicular membrane matters with the average roughness of 16.4 t nm assuring the oleate adsorption. These results contributed to comprehending the interaction of oleate and siderite.

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Section: Introductionmentioning

confidence: 99%

Density Functional Theory and Atomic Force Microscopy Study of Oleate Functioned on Siderite Surface

Zhang

Yuan

et al. 2018

Minerals

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“…In the following paragraph, a short review of such studies in the case of carbonated media has been discussed. In anoxic carbonated media, the most common iron corrosion product characterised is siderite FeCO 3 [3][4][5]. Some other iron carbonated phases such as green rust GR(1) CO 2À 3 [7] are also identified.…”

Section: Introductionmentioning

confidence: 99%

“…Some other iron carbonated phases such as green rust GR(1) CO 2À 3 [7] are also identified. Blengino et al [3] highlight the fact that two types of carbonate compounds are present in thin corrosion layers: siderite and an iron hydroxicarbonate whose general formula is Fe x (OH) y (CO 3 ) z . The latter is supposed to be formed from the oxidation of GR(1).…”

Section: Introductionmentioning

confidence: 99%

Multisecular corrosion behaviour of low carbon steel in anoxic soils: Characterisation of corrosion system on archaeological artefacts

Saheb

Neff

Dillmann

et al. 2009

Materials & Corrosion

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International audienceIn the context of the prediction of materials behaviour used in the nuclear waste storage, the understanding of iron corrosion mechanisms in anoxic environment is of great importance. Information can be obtained using complementary analytical tools. Interactions between burial soil and archaeological artefacts are studied by performing on site soil measurements. Moreover, archaeological artefacts are studied on transverse sections using a combination of microbeam techniques. The specific interest of this project lies in the study of ferrous thick corrosion layers formed in anoxic environments

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“…11, which has been used by other authors. 4,22,23 The R s in high frequency is the solution resistance and the time constant in high frequency (C f and R f ) reflects the information of the passive film. Furthermore, the time constant in low frequency (C dl and R ct ) is related to the information of the corrosion reaction on the steel surface.…”

Section: Eis Measurement Of Steel In Concretementioning

confidence: 99%

Electrochemical Characterization of Solid Ag/AgCl Reference Electrode with Different Electrolytes for Corrosion Monitoring of Steel in Concrete

Jin

Jiang

et al. 2016

Electrochemistry

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Solid Ag/AgCl reference electrodes (RE) with different electrolytes were assembled and characterized in concrete. The performances have been studied with respect to known RE. And the corrosion states of steel have been investigated with respect to embedded and external REs by different electrochemical techniques. Results revealed that half-cell potential of 0.1, 1 and 4.18 M AgCl RE was 20 mV, −30.5 mV and −54.6 mV, respectively. In addition, 4.18 M AgCl RE exhibited the minimum potential drift, the smallest temperature coefficient value and the best reversibility. These corrosion parameters such as rebar potential, corrosion current density (I corr ) and charge transfer resistance (R ct ) obtained for steel with respect to these embedded AgCl REs could clearly differentiate the active condition of steel from the passive condition. Besides, I corr and R ct obtained for steel with respect to external SCE were usually 2 or 3 times larger than these embedded AgCl REs. In such cases embedded AgCl REs could accurately investigate the corrosion rate of steel in concrete. Moreover, the 4.18 M AgCl RE was recommended to monitor the corrosion condition of steel in concrete structure.

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Physico-chemical characterization of corrosion layers formed on iron in a sodium carbonate-bicarbonate containing environment

Cited by 72 publications

References 20 publications

Density Functional Theory and Atomic Force Microscopy Study of Oleate Functioned on Siderite Surface

Density Functional Theory and Atomic Force Microscopy Study of Oleate Functioned on Siderite Surface

Multisecular corrosion behaviour of low carbon steel in anoxic soils: Characterisation of corrosion system on archaeological artefacts

Electrochemical Characterization of Solid Ag/AgCl Reference Electrode with Different Electrolytes for Corrosion Monitoring of Steel in Concrete

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