Study of Ce(III) as a potential corrosion inhibitor of Zn-Fe sacrificial coatings electrodeposited on steel

Arrighi, C.; Nguyen, Thi Thanh Huong; Paint, Yoann; Savall, C.; Coelho, Leonardo Bertolucci; Creus, Juan; Olivier, Marie‐Georges

doi:10.1016/j.corsci.2022.110249

Cited by 10 publications

(5 citation statements)

References 41 publications

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“…However, as the steel dissolution increases (around an hour), more electrolyte reaches the Zn, causing the OCP to decrease to a value between the potential of the steel and Zn. Consequently, the galvanic couple is consolidated at a potential around -0.6222 V [ 39 ]. It is essential to note that previously, a steel shim (pre-coated with Zn) underwent perforation using a tiny pin, exposing only a small area of Zn.…”

Section: Resultsmentioning

confidence: 99%

Accelerated corrosion of low carbon steel by oscillatory acidic streams generated with a bio-inspired claw device

Godínez,

Montoya-Rangel,

Montoya

2024

PLoS ONE

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A mechanical device inspired by the pistol shrimp snapper claw was developed. This technology features a claw characterized by a periodic opening/closing motion, at a controlled frequency, capable of producing oscillating flows at transitional Reynolds numbers. An innovative method was also proposed for determining the corrosion rate of carbon steel samples under oscillating acidic streams (aqueous solution of HCl). By employing very-thin carbon steel specimens (25 μm thickness), with one side coated with Zn and not exposed to the stream, it became possible to electrochemically sense the Zn surface once the steel sample was perforated, thus providing the average dissolution rate into the most relevant pit on the steel surface. Furthermore, a laser light positioned beneath the metallic sample, along with a camera programmed to periodically capture images of the steel surface, facilitated the accurate counting of the number of newly formed pits. The system consisting of the thin steel sample and the Zn coating can be seen as a type of corrosion sensor. Furthermore, the proposed laser illumination method allows corroborating the electrochemical detection of pits and also establishing their location. The techniques crafted in this study pave the way for developing alternative corrosion sensors that boast appealing attributes: affordability, compactness, and acceptable accuracy to detect in time and space localized damage.

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Section: Resultsmentioning

confidence: 99%

Accelerated corrosion of low carbon steel by oscillatory acidic streams generated with a bio-inspired claw device

Godínez,

Montoya-Rangel,

Montoya

2024

PLoS ONE

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“…Steels, as critical metallic materials in civil engineering, are under scrutiny for corrosion protection through Ce-compounds via inhibition [182][183][184], CeCC deposition [185][186][187][188], and the utilization of Ce-compounds as active ingredients in protective coatings [183].…”

Section: Application Of Cerium Oxide and Soluble Salts-based Material...mentioning

confidence: 99%

Innovative Applications of Cerium Oxide-Based Materials in Civil Engineering, Automation, and Energy Sectors

Kozhukharov,

Girginov,

Lilova

et al. 2024

Cerium - Chemistry, Technology, Geology, Soil Science and Economics

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Cerium oxide materials exhibit remarkable properties, positioning them as highly effective, environmentally friendly solutions across diverse applications. This chapter provides a comprehensive overview of fundamental concepts and technological methodologies related to cerium oxide (CeO2) and doped ceria-based materials. Emphasis is placed on electrochemical deposition, spray pyrolysis, and the sol-gel approach for synthesizing thin and thick layers of ceria. The versatility of these materials is explored, spanning from corrosion protection layers and specialized ceramic elements for sensor applications to components for solid oxide fuel cells (SOFCs) and electrodes for water-splitting cells. Additionally, the chapter delves into the promising applications of recently developed ceria-based nanomaterials in various fields, marking some advanced methods for CeO2-based materials synthesis. The key findings are succinctly summarized in the concluding section.

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“…The dissolved zinc and aluminum first formed oxides that were easily hydrolyzed. The oxides hydrolyzed to hydroxides Zn(OH) 4 2− and Al(OH) 4 − , which continuously promote the dissolution of the coating. When the hydroxide content in solution is high enough, hydroxides coordinate to form stable bimetallic hydroxides and deposit on the coating surface.…”

Section: Mechanismmentioning

confidence: 99%

“…Coating technology is an economical and effective surface treatment technology, which is widely used to prevent the corrosion and destruction of metal constructions in a marine environment [1,2]. A cathodic protection coating is one of many protective coatings [3,4]. The protection mechanism of cathodic protection coating is reflected in multiple ways.…”

Section: Introductionmentioning

confidence: 99%

“…Huang [15] increased the cathodic protection without causing too fast a coating dissolution by matching the ratio of Zn and Al in a Zn-Al coating. Arrighi [4] added Ce(III) as a potential corrosion inhibitor of sacrificial Zn-Fe coatings that were electrodeposited on steel. Liu [16] added an active Mg element to Al-Zn-Si, which decreased the electrode potential and enhanced the cathodic protection efficiency of an Al-Zn-Si alloy.…”

Section: Introductionmentioning

confidence: 99%

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Balanced Anti-Corrosion Action of Reduced Graphene Oxide in Zn-Al Coating during Medium-Term Exposure to NaCl Solution

Shi,

Wu,

Zhang

et al. 2023

Coatings

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Considering the electronegativity and shielding anti-sepsis characteristic of reduced graphene oxide (G), we design a Zn-Al coating with embedded G (Zn-G/Al) on low-carbon steel using the low-pressure cold spray (LPCS) method. In this method, G-coated Al powders (G/Al) prepared using in situ reduction and Zn powders were mixed as a raw material for spraying. Embedding G could boost the cathodic protection performance of Zn-Al (70 wt.% zinc and 30 wt.% aluminum) coating, as has been confirmed in previous work. In this work, the microstructure, composition and electrochemical parameters of Zn-G/Al coating during full immersion were measured to investigate G’s effect on the corrosion protection properties of the Zn-Al coating. The test results showed that embedded G could facilitate the generation of many corrosion products and pile on the coating surface to form a corrosion product film during full immersion. The corrosion product film on the Zn-0.2 wt.%G/Al coating surface demonstrated an excellent protective property, which reflects the fact that the Ecorr and icorr values for Zn-0.2 wt.%G/Al after 20d immersion (Ecorr = −1.143 Vvs.SCE, icorr= 49.96 μA/cm2) were lower than the initial value (Ecorr = −1.299 Vvs.SCE, icorr = 82.16 μA/cm2). It can be concluded that adding an appropriate amount of G to the coating can balance the cathodic protection and shielding property of the coating. The equilibrium mechanism was also analyzed in this work.

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Study of Ce(III) as a potential corrosion inhibitor of Zn-Fe sacrificial coatings electrodeposited on steel

Cited by 10 publications

References 41 publications

Accelerated corrosion of low carbon steel by oscillatory acidic streams generated with a bio-inspired claw device

Accelerated corrosion of low carbon steel by oscillatory acidic streams generated with a bio-inspired claw device

Innovative Applications of Cerium Oxide-Based Materials in Civil Engineering, Automation, and Energy Sectors

Balanced Anti-Corrosion Action of Reduced Graphene Oxide in Zn-Al Coating during Medium-Term Exposure to NaCl Solution

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