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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Onyeachu, Ikenna B.
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Topics
Publications (5/5 displayed)
- 2022Exploration of the potentials of imidazole-based inhibitor package for heat exchanger-type stainless steel during acid cleaning operationcitations
- 2021Adsorption and corrosion inhibition characteristics of 2–(chloromethyl)benzimidazole for C1018 carbon steel in a typical sweet corrosion environmentcitations
- 2020Pterocarpus santalinoides leaves extract as a sustainable and potent inhibitor for low carbon steel in a simulated pickling mediumcitations
- 2020Corrosion inhibition effect of a benzimidazole derivative on heat exchanger tubing materials during acid cleaning of multistage flash desalination plantscitations
- 2020Benzotriazole derivative as an effective corrosion inhibitor for low carbon steel in 1 M HCl and 1 M HCl + 3.5 wt% NaCl solutionscitations
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article
Exploration of the potentials of imidazole-based inhibitor package for heat exchanger-type stainless steel during acid cleaning operation
Abstract
<p>Protecting heat exchanger alloys from corrosion during acid cleaning is sacrosanct and necessitates the development and application of highly–efficient environmentally–friendly corrosion inhibitors. In the present work, gravimetry, electrochemical impedance spectroscopy (EIS), cyclic potentiodynamic polarization (CPDP), cyclic voltammetry and scanning electron microscopy-energy dispersive x-ray spectrophotometry (SEM-EDX) have been employed to investigate the potential of 1–benzylimidazole and its mixture with potassium iodide (KI) for the mitigation of stainless steel (SS316L) corrosion in 1 M HCl solution at 60 °C. After short immersion time, 1–benzylimidazole is found to decrease the weight loss and corrosion rate of the substrate and impacts an inhibition efficiency of ≈ 65% at 2000 ppm dosage. The inhibitor adsorption followed the Freundlich isotherm. The synergism significantly lowers the rate of anodic half–reactions involving Fe and Cr oxidation which, in turn, boosts the inhibitor efficiency to > 80% through a competitive synergism. SEM-EDX characterization confirm that the passive layer formed in the presence of 1–benzylimidazole + KI significantly mitigated against the propagation of localized pitting corrosion. Prolonged immersion time, up to 72 h, lowers the inhibition efficiency of 1–benzylimidazole + KI mixture to 74 %.</p>