Study of phosphonate addition and hydrodynamic conditions on ordinary steel corrosion inhibition in simulated cooling water

Touir, R.; Dkhireche, N.; Touhami, M. Ebn; Sfaira, M.; Senhaji, O.; Robin, Jean‐Jacques; Boutevin, Bernard; Cherkaoui, Mohammed

doi:10.1016/j.matchemphys.2010.02.063

Cited by 98 publications

(30 citation statements)

References 31 publications

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“…high frequency (HF), the first semicircle may be devoted to the adsorbed specie, whereas the second one is the response of a combination of R ct and constant phase element (CPE). At low frequency (LF), the obtained loop is generally assigned to a slow transport process like diffusion [41,42]. However, the Warburg impedance is introduced because it reflects the diffusion process of dissolved oxygen from the bulk solution to the electrode surface and/or the diffusion process of soluble zinc or copper species in the reverse sense.…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Corrosion Inhibition Study of Brass in Simulated Cooling Water by Triazole Derivatives, Cetyltrimethylammonium Bromide and Their Mixture

et al. 2014

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The effect of triazole (TR), 3-amino-1,2,4-triazole (ATA) and cetyltrimethylammonium bromide (CTAB) on the inhibition of brass corrosion in simulated cooling water system has been studied using electrochemical measurements, scanning electron microscopy (SEM) observations and energy dispersive X-ray (EDX) analysis. The potentiodynamic polarization study reveals that these inhibitors inhibit both cathodic and anodic reactions, indicating a mixed-type control of inhibition and their inhibition depend on the nitrogen number in their structure. It shows that the ATA is the best inhibitor. The interference between CTAB and TR derivatives against corrosion has been also studied. So, a large passive current plate is observed directly from the corrosion potential in the presence of formulation. In addition, the operational parameters effect on the performance of this formulation is also investigated. It shows that its inhibition efficiency increases with pH, immersion time and the presence of corrosion products and takes its performance by increasing in temperature. The SEM/EDX data confirm that the formulation is a corrosion and scale inhibitor.

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Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Corrosion Inhibition Study of Brass in Simulated Cooling Water by Triazole Derivatives, Cetyltrimethylammonium Bromide and Their Mixture

et al. 2014

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“…So, the water used as a thermal fluid in cooling circuits usually leads to three problems, namely, corrosion, scaling, and microorganism development. These phenomena are the source of a loss of the metallic material, a decrease of the thermal efficiency of the circuit, and the proliferation of microorganisms in the water, respectively, (Touir et al 2010;Srisuwan et al 2008). Indeed, iron is the principal redox-active metal in the metabolic processes of essentially all living organisms.…”

Section: Introductionmentioning

confidence: 99%

Corrosion and scale studies of copper used in Moroccan industrial cooling water systems

Elhousni

Galai

ElKamraoui³

et al. 2017

Euro-Mediterr J Environ Integr

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The corrosion and scale behavior of copper in industrial cooling water system were investigated via electrochemical measurements, ionic chromatography, SEM/EDAX, and X-ray diffraction analyses. It was found that the studied water has a corrosion and scale character. The EDAX and XRD analyses indicated that the major corrosion and scale products were the CuO 2 and CaCO 3 , respectively. In addition, the middle Mueller-Hinton test was also employed to evaluate the development of microorganisms for copper in make-up water solution. It is noted that bacterial colonies appeared after immersion of samples in make-up water, indicating that this water develops bacterial colonization. Finally, the influence of some operating parameters on the corrosion and scale rate was studied. It was shown that the scale rate increases with pH, temperature, and the addition of chloride and sulfide ions. It was also found that the corrosion rate increases with temperature and chloride ions and decreases with pH and immersion time.

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“…At high frequencies the size of the capacitive loop increases with the concentration. This is attributed to the formation of an inhibitor film with a barrier effect against the aggressive ions [35]. At low frequencies, the addition of inhibitors lead to an increase in the charge-transfer resistance (Rct) value (diameter of the loop between high and low frequency) which has a non-monotonous variation in relation to the inhibitor content.…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Clays valorization as corrosion inhibitors for E400 reinforcing steel

Gassama

Fall

Yade

et al. 2016

Ovidius University Annals of Chemistry

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Abstract. The behavior of E400 steel, a constructional steel widely used in Senegal, was studied in aqueous NaCl solution in the presence of two types of clay: volcanic tuffs, and sedimentary montmorillonite. The protection efficiency of these compounds were electrochemically assessed (corrosion potential variation curves, polarization curves and electrochemical impedance spectroscopy) at various inhibitor contents. The results obtained showed that these inhibitors present an inhibitory efficacy of about 70% for an optimal concentration of 0.60% for the tuffs and 62% for a maximum content of 0.50% for montmorillonite.

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Study of phosphonate addition and hydrodynamic conditions on ordinary steel corrosion inhibition in simulated cooling water

Cited by 98 publications

References 31 publications

Corrosion Inhibition Study of Brass in Simulated Cooling Water by Triazole Derivatives, Cetyltrimethylammonium Bromide and Their Mixture

Corrosion Inhibition Study of Brass in Simulated Cooling Water by Triazole Derivatives, Cetyltrimethylammonium Bromide and Their Mixture

Corrosion and scale studies of copper used in Moroccan industrial cooling water systems

Clays valorization as corrosion inhibitors for E400 reinforcing steel

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