The effect of electrolyte flow on the performance of 12-aminododecanoic acid as a carbon steel corrosion inhibitor in CO2-saturated hydrochloric acid

Ghareba, Saad; Omanovic, Sasha

doi:10.1016/j.corsci.2011.07.031

Cited by 35 publications

(15 citation statements)

References 17 publications

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“…There is a clear acceleration of both the anodic and cathodic reactions with an increase in temperature. Similar curves have been reported previously [30,31]. The polarization parameters are listed in Table 6.…”

Section: Effect Of Temperaturesupporting

confidence: 73%

Sweet Corrosion Inhibition on API 5L-B Pipeline Steel

Ibraheem

Fouda

Rashad³

et al. 2012

ISRN Metallurgy

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Corrosion inhibition and adsorption behavior of two triazole derivatives on API 5L-B carbon steel in CO 2 -saturated 3.5% NaCl solutions was investigated using potentiodynamic polarization, EIS, and EFM techniques. Specimen surfaces were characterized using SEM, EDX, and XRD. Results show that the two compounds are mixed-type inhibitors and inhibition efficiency increases with increasing concentrations. Adsorption of the two compounds chemisorption and obeys Langmuir adsorption isotherm. Activation energy and thermodynamic parameters were calculated. Surface analyses confirm the formation of iron nitrides on the metal surface which supports results obtained from previous techniques.

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Section: Effect Of Temperaturesupporting

confidence: 73%

Sweet Corrosion Inhibition on API 5L-B Pipeline Steel

Ibraheem

Fouda

Rashad³

et al. 2012

ISRN Metallurgy

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“…A main driver for this work is the widespread discussion about whether inhibitor films can be removed from the metal surface at some critical fluid velocity. [31][32][33] This velocity apparently depends on the concentration and type of corrosion inhibitor and is manifested by a rapid increase in the corrosion rate when inhibitor molecules are removed from the surface. Schmitt, et al, reported that the performance of inhibitor films decreased when the flow velocity exceeded a critical value, suggesting that a high wall shear stress can cause the removal of inhibitor film and inhibition failure.…”

Section: Corrosion-march 2014mentioning

confidence: 99%

“…A mechanism for inhibitor failure in flowing solutions has been repeatedly attributed to the wall shear stress removing inhibitor films from steel pipe walls. [31][32][33][34] The typical values of shear stress in pipe flow are in the range from 1 Pa to 10 Pa, with fluctuations seen under the most extreme conditions in multiphase slug flow not exceeding 1 kPa. [49][50][51] Based on our penetration force measurements, it appears that an MPa level stress is required to break through the inhibitor film.…”

Section: Corrosion-march 2014mentioning

confidence: 99%

Atomic Force Microscopy Study of the Adsorption of Surfactant Corrosion Inhibitor Films

Xiong¹,

Brown²,

Kinsella³

et al. 2013

Corrosion

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International audienceThe properties of an adsorbed corrosion inhibitor--tall oil fatty acid (TOFA) imidazolium chloride--on mica, gold, and X65 steel were studied using in situ atomic force microscopy (AFM). Topography images and thickness measurements show that the structure of inhibitor film changes from monolayer to bi-layer as inhibitor concentration exceeds its critical micelle concentration (CMC). Further kinetic study indicates that the developing of a full film took about 6 h. Quantitative force measurements were performed to evaluate the forces associated with adsorption of inhibitor films. Results show that the mechanical stress needed to physically remove adsorbed inhibitor molecules is of the order of MPa

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“…In our particular corrosion system, improved transport of inhibitor molecules to the metal surface seems to outweigh the surface erosion effect resulting in an overall decrease of the corrosion rate at high electrode rotational speed.To our knowledge, such a "positive" effect of flow velocity has not been previously reported for film-forming organic inhibitors. Omanovic et al[26] reported the influence of electrolyte flow on the inhibitor efficiency of 12-aminododecanoic acid in CO2-saturated 0.5 M HCl. Flow velocity did not significantly change the corrosion rate of carbon steel at 3 mM of inhibitor.…”

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confidence: 99%