Electrochemistry and surface analysis of the effect of benzotriazole on the cut edge corrosion of galvanized steel

Custódio, Juliana Vieira; Agostinho, Sílvia Maria Leite; Simões, A.M.

doi:10.1016/j.electacta.2010.03.072

Cited by 37 publications

(16 citation statements)

References 30 publications

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“…Cut edge corrosion has been often studied by local electrochemical techniques namely, scanning vibrating electrode technique (SVET) , micropotentiometry , localized electrochemical impedance , and scanning electrochemical microscopy (SECM) . Some of the mentioned studies support the electrochemical data with the corrosion product analysis . Painted and unpainted galvanized steel were used as the base material in all these references.…”

Section: Introductionmentioning

confidence: 99%

Corrosion product identification at the cut edge of aluminum-rich metal-coated steel

Alvarez-Pampliega

Bergh

Strycker

et al. 2014

Materials and Corrosion

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The formation of corrosion product at the cut edge of aluminum-rich metalcoated steel is reported in the present work. Painted metal-coated steel samples with different amounts of Al in the metal coating, were immersed in a 0.05 M NaCl solution. The ex situ analysis of the corrosion products formed was carried out by scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDX), Raman and Fourier transform infrared (FT-IR) spectroscopy. The role of these products is discussed along with the influence of Al content in the metal coating. Figure 4. EDX mappings comparison between (a) hot dip Al-Zn steel immersed 2 h in 0.05 M NaCl and (b) 40 h www.matcorr.com

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Section: Introductionmentioning

confidence: 99%

Corrosion product identification at the cut edge of aluminum-rich metal-coated steel

Alvarez-Pampliega

Bergh

Strycker

et al. 2014

Materials and Corrosion

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“…In addition to that, the diffractogram in Figure 7 shows the presence of unknown peaks (identified with asterisks). Serdechnova and coworkers attributed these peaks to reaction products between LDH hydroxide layers and benzotriazole, since it is known that there is high affinity between benzotriazole and zinc and the tendency of them to form complexes [24]. Thus, it was concluded that the attempt to insert benzotriazole in pristine nitrogen oxides containing Zn/Al LDH resulted in partial decomposition of LDH, and the portion that remained intact may be filled with hydroxyls as the interlayer ion.…”

Section: Resultsmentioning

confidence: 99%

Performance Evaluation of Layered Double Hydroxides Containing Benzotriazole and Nitrogen Oxides as Autonomic Protection Particles against Corrosion

Pellanda

Neto

Jorge

et al. 2021

International Journal of Polymer Science

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Layered double hydroxides (LDH) are lamellar structures with positively charged laminates and charge-compensating interlayer anions. The ion-exchange capacity of LDHs makes them as promising hosts for corrosion inhibitor anions with stimulus-responsive release and self-healing anticorrosion. In the current work, LDHs loaded with two different corrosion inhibitors (nitrogen oxides and benzotriazole) were evaluated for their ion-exchange capacity and autonomic protection against corrosion on carbon steel. Studies on nitrogen oxide-loaded LDH (NOx-LDH) showed that nitrogen oxides were successfully intercalated in LDH structure, which were released in chloride media. Open Circuit Potential (OCP) results showed that NOx-LDH extract shifted OCP to nobler values, indicating the protection of metal. For benzotriazole-loaded LDH (BTZ-LDH), the results indicated the presence of benzotriazole in the structure, but its release was not observed. OCP results showed no significant increase of carbon steel protection, corroborating with the conclusion that benzotriazole ions did not migrate to metal surface. Considering these results, the insertion of NOx-LDH in an automotive primer was proceeded, under three different concentrations (0.2. 1.0, and 3.0%). Electrochemical impedance spectroscopy (EIS) showed that the more effective NOx-LDH concentration on corrosion delay was 0.2%, which better balanced protection level conferred by LDH with a possible loss on effectiveness of coating due to increase in porosity.

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“…To this end, a major class of self-healing coatings were developed via the incorporation of corrosion inhibitors such as benzotriazole (BTA) [32][33][34] , 8-hydroxyquinoline (8HQ) 35 and cerium-based inhibitors 36,37 . When damage occurs, the corrosion inhibitors leach out and form barrier films by chemical complexation or physical adsorption on the exposed substrates [38][39][40] . A few recent studies have incorporated corrosion inhibitors to superhydrophobic coatings [41][42][43] .…”

Section: Introductionmentioning

confidence: 99%

Dual-action smart coatings with a self-healing superhydrophobic surface and anti-corrosion properties

et al. 2017

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Important noteTo cite this publication, please use the final published version (if applicable). Please check the document version above. CopyrightOther than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons. Takedown policyPlease contact us and provide details if you believe this document breaches copyrights. We will remove access to the work immediately and investigate your claim. AbstractThis work introduces a new self-healing superhydrophobic coating based on dual actions by the corrosion inhibitor benzotriazole (BTA) and an epoxy-based shape memory polymer (SMP). Damage to the surface morphology (e.g., crushed areas and scratches) and the corresponding superhydrophobicity is shown to be rapidly healed through a simple heat treatment at 60 °C for 20 min. Electrochemical impedance spectroscopy (EIS) and scanning electrochemical microscopy (SECM) were used to study the anti-corrosion performance of the scratched and the healed superhydrophobic coatings immersed in a 3.5 wt% NaCl solution. The results revealed that the anti-corrosion performance of the scratched coatings was improved upon the incorporation of BTA. After the heat treatment, the scratched superhydrophobic coatings exhibited excellent recovery of the anti-corrosion performance, which is attributed to the closure of the scratch by the shape memory effect and to the improved inhibition efficiency of BTA. Furthermore, we found that the pre-existing corrosion product inside the coating scratch could hinder the scratch closure by the shape memory effect and reduce the coating adhesion in the scratched region. However, the addition of BTA effectively suppressed the formation of corrosion product and enhanced the self-healing and adhesion performance under this condition. Importantly, we also demonstrated that the coating can be autonomously healed within 1 h in an outdoor environment using sunlight as the heat source.

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Electrochemistry and surface analysis of the effect of benzotriazole on the cut edge corrosion of galvanized steel

Cited by 37 publications

References 30 publications

Corrosion product identification at the cut edge of aluminum-rich metal-coated steel

Corrosion product identification at the cut edge of aluminum-rich metal-coated steel

Performance Evaluation of Layered Double Hydroxides Containing Benzotriazole and Nitrogen Oxides as Autonomic Protection Particles against Corrosion

Dual-action smart coatings with a self-healing superhydrophobic surface and anti-corrosion properties

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