Cyclodextrin inhibits zinc corrosion by destabilizing point defect formation in the oxide layer

Altin, Abdulrahman; Krzywiecki, Maciej; Sarfraz, Adnan; Toparlı, Çiğdem; Laska, Claudius Alexander; Kerger, Philipp; Žeradjanin, Aleksandar R.; Mayrhofer, Karl Johann Jakob; Rohwerder, Michael; Erbe, Andreas

doi:10.3762/bjnano.9.86

Cited by 15 publications

(13 citation statements)

References 49 publications

(63 reference statements)

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“…The hydrophobic MBT cannot incorporate into the aqueous corrosion products of zinc, which are formed in chloride during the preparation step of the pretreatment film. Although our group has recently reported that β-CD acts as a corrosion inhibitor by itself, its inhibition efficiency is rather low at chloride concentrations of 0.5 M and above . Consequently, β-CD itself is likely not directly contributing to the inhibition.…”

Section: Resultsmentioning

confidence: 88%

“…26 β-CD itself acts as corrosion inhibitor for zinc in the presence of up to 0.1M chloride. 27 Zinc is widely used as metallic coating for steels, and to a lesser extend also on aluminum alloys. As opposed to the situation investigated for one class of aluminum alloys in above mentioned works employing inhibitor release systems where localized corrosion is dominant, [23][24][25] uniform corrosion dominates corrosion of zinc.…”

Section: Introductionmentioning

confidence: 99%

“…The modification of chitosan with β-CD resulted in a reduced corrosion rate of carbon steel in hydrochloric acid compared to uncoated steel, where the chitosan-CD structure was described as an inhibitor . β-CD itself acts as a corrosion inhibitor for zinc in the presence of up to 0.1 M chloride …”

Section: Introductionmentioning

confidence: 99%

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Pretreatment with a β-Cyclodextrin-Corrosion Inhibitor Complex Stops an Initiated Corrosion Process on Zinc

et al. 2018

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Metal pretreatment is typically the first step in a reliable corrosion protection system. This work explores the incorporation of complexes between the cyclic oligosaccharide β-cyclodextrin (β-CD) and the molecular organic corrosion inhibitor 2-mercaptobenzothiazole (MBT) into an oxide-based pretreatment layer on metallic zinc. The layers were produced by a precorrosion step in the presence of β-CD. Resulting films have a morphology dominated by spherical particles. X-ray photoelectron spectroscopy (XPS) investigations of the surfaces show the sulfur atoms of MBT to be partially oxidized but mostly intact. Samples pretreated with such a layer where subsequently coated with a model polymer coating, and the delamination of this model coating from an artificial defect was monitored by a scanning Kelvin probe (SKP). SKP results show a slow down of delamination after several hours of the ongoing corrosion process for surfaces pretreated with the complexes. Finally, a lifting of the electrode potential in the defect was observed, with a subsequent complete stop in delamination and repassivation of the defect after ≈10 h. The repassivation is attributed to the release of MBT after initiation of the corrosion process. Most likely, the increase of pH, combined with the availability of aqueous solution, facilitates the MBT release after initiation of a corrosion process. Consequently, complexes formed from β-CD and corrosion inhibitors can be effectively incorporated into inorganic pretreatments, and the inhibitor component can be released upon start of the corrosion process.

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Section: Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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Pretreatment with a β-Cyclodextrin-Corrosion Inhibitor Complex Stops an Initiated Corrosion Process on Zinc

et al. 2018

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“…Nevertheless, reactive fresh zinc surface under exposure to the atmosphere subsequently formed dense, adherent corrosion byproducts, leading to 10- to 100-fold decrease in the rate of corrosion than ferrous materials depending on the environment. These corrosion products develop rapidly on metal surface as the coating and act as an additional barrier between the metal and the environment, which might make it a well-suited corrosion protective coating for metal products [33]. Thus, in highly oxidizing condition, zinc might limit reactions occurring on the titanium oxide layer of Ti-NW-Zn, which protects the titanium substrates.…”

Section: Resultsmentioning

confidence: 99%

Enhanced corrosion resistance of zinc-containing nanowires-modified titanium surface under exposure to oxidizing microenvironment

Zhu

Shao

et al. 2019

J Nanobiotechnol

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Titanium (Ti) and its alloys as bio-implants have excellent biocompatibilities and osteogenic properties after modification of chemical composition and topography via various methods. The corrosion resistance of these modified materials is of great importance for changing oral system, while few researches have reported this point. Recently, oxidative corrosion induced by cellular metabolites has been well concerned. In this study, we explored the corrosion behaviors of four common materials (commercially pure Ti, cp-Ti; Sandblasting and acid etching-modified Ti, Ti-SLA; nanowires-modified Ti, Ti-NW; and zinc-containing nanowires-modified Ti, Ti-NW-Zn) with excellent biocompatibilities and osteogenic capacities under the macrophages induced-oxidizing microenvironment. The results showed that the materials immersed into a high oxidizing environment were more vulnerable to corrode. Meanwhile, different surfaces also showed various corrosion susceptibilities under oxidizing condition. Samples embed with zinc element exhibited more excellent corrosion resistance compared with other three surfaces exposure to excessive H 2 O 2 . Besides, we found that zinc-decorated Ti surfaces inhibited the adhesion and proliferation of macrophages on its surface and induced the M2 states of macrophages to better healing and tissue reconstruction. Most importantly, zinc-decorated Ti surfaces markedly increased the expressions of antioxidant enzyme relative genes in macrophages. It improved the oxidation microenvironment around the materials and further protected their properties. In summary, our results demonstrated that Ti-NW-Zn surfaces not only provided excellent corrosion resistance properties, but also inhibited the adhesion of macrophages. These aspects were necessary for maintaining osseointegration capacity and enhancing the corrosion resistance of Ti in numerous medical applications, particularly in dentistry.

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“…[17] Inhibition effects can also be caused by a rather intricate influence on the defect structure of the forming oxide. [38] The cathodic processes are not affected by the BDs, as evidenced by the good agreement of the cathodic polarisation curves in the presence and absence of BDs. Therefore, the decreased corrosion rate must be caused by an effect on the anodic processes, which implies that a component from the BDs acts like an anodic corrosion inhibitor.…”

Section: Carbon Steelmentioning

confidence: 81%

The effect of bird droppings on the corrosion of steel and aluminum used in offshore applications

Forr

Mysliu

Nordlien

et al. 2022

Materials & Corrosion

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Engineering materials in service are frequently exposed to bird droppings (BDs). In this study, the interaction has been studied of BDs from chicken with a carbon steel, AISI 316, 22% Cr duplex stainless steel (DSS), 25% Cr super duplex stainless steel (SDSS), carbon steel with a thermally sprayed aluminum (TSA) coating, and aluminum alloy EN AW 6082. Samples with and without BDs are exposed to a cyclic salt spray test for up to 692 h (29 days). Electrochemical experiments in the presence of BDs were conducted in a syringe‐based droplet cell. Characterization of the corrosion products by infrared (IR) and Raman spectroscopy shows no build‐in of organic components into the corrosion products in the samples exposed to BDs. In general, BDs affect the anodic dissolution mechanism of metals and increase the critical pitting potential. For carbon steel, a component of the BDs acts as an anodic inhibitor, leading to passivation of the surface and decreasing corrosion rates by 1–2 orders of magnitude. For 316, BDs increase the critical pitting potential but may facilitate crevice‐like initiation of localized corrosion. There are negligible effects of BDs on the corrosion of SDSS, and no evidence either for adverse effects on DSS. TSA shows an increased corrosion rate by half to one order of magnitude with BDs, but its ability to galvanically protect a steel base material is not compromised. AW 6082 shows decreased corrosion rate, no difference in mass loss, but increased pitting in the presence of BDs. Overall, these model experiments may only be seen as the start of a more systematic understanding of the interaction of BDs with engineering materials.

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Cyclodextrin inhibits zinc corrosion by destabilizing point defect formation in the oxide layer

Cited by 15 publications

References 49 publications

Pretreatment with a β-Cyclodextrin-Corrosion Inhibitor Complex Stops an Initiated Corrosion Process on Zinc

Pretreatment with a β-Cyclodextrin-Corrosion Inhibitor Complex Stops an Initiated Corrosion Process on Zinc

Enhanced corrosion resistance of zinc-containing nanowires-modified titanium surface under exposure to oxidizing microenvironment

The effect of bird droppings on the corrosion of steel and aluminum used in offshore applications

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