Corrosion resistance of a silane/ceria modified Mg-Al-layered double hydroxide on AA5005 aluminum alloy

Wu, Wei; Li, Yuchao; Zhou, Yongfeng; Yao, Qing-Song; Song, Liang; Zeng, Rong‐Chang; Tjong, Sie Chin; Chen, Dongchu

doi:10.1007/s11706-019-0476-x

Cited by 13 publications

(6 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bottom anodic layer is sealed by LDH precursors along with the precipitation of cerium hydroxide/oxides on it, further the final upper air film, and the dense bilayer LDH network sandwiched between them. Stearate-intercalated LDHs repelled the permeation of water molecules and chlorides, which is a key important parameter of that work where stearate introduction causes the lowering of surface energy and endorses superhydrophobic characteristics that enhance the active protection for LDHs; the presence of cerium in the LDH frame protects by its inhibition action through reducing the cathodic reaction rate on contact with corrosive media [26,27]. The strong passive and active protection were found to develop the compactness and integrity of LDHs, which is significant for delaying the corrosion process and is a powerful approach to enhancing anti-corrosion behavior.…”

Section: Resultsmentioning

confidence: 99%

“…dorses superhydrophobic characteristics that enhance the active protection for LDHs; the presence of cerium in the LDH frame protects by its inhibition action through reducing the cathodic reaction rate on contact with corrosive media [26,27]. The strong passive and active protection were found to develop the compactness and integrity of LDHs, which is significant for delaying the corrosion process and is a powerful approach to enhancing anti-corrosion behavior.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Ce-Doped-MgAl Superhydrophobic Layered Double Hydroxide for Enhanced Corrosion Resistance Properties

Iqbal

Asghar

Fedel

2021

Solids

View full text Add to dashboard Cite

Double doped layered double hydroxide thin films were developed directly on the aluminum substrate in two steps: Initially cerium-based MgAl-layered double hydroxide (LDH) were synthesized directly on the anodic aluminum surface via the in situ growth method, and were then modified with the stearate anions through an ion-exchange mechanism to achieve compact multifunctional protective thin films. The structural and morphological characteristics of the developed LDH films were investigated, and the surface contact angle measurements (CA) and self-cleaning properties were analyzed. The obtained double doped LDH film displayed the superhydrophobic characteristic with a water contact angle of ~155°. Furthermore, the superhydrophobic behavior of LDH on exposure to UV radiation (λ = 310 nm) was examined to evaluate outdoor applications. Long-term Electrochemical Impedance Spectroscopy (EIS) analysis was performed to understand the corrosion resistance properties. The introduction of double doped LDHs demonstrates significantly higher corrosion resistance properties than only cerium-modified LDHs and has shown superior stability against 0.1 M NaCl solution.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Ce-Doped-MgAl Superhydrophobic Layered Double Hydroxide for Enhanced Corrosion Resistance Properties

Iqbal

Asghar

Fedel

2021

Solids

View full text Add to dashboard Cite

show abstract

“…The relative binding energy of various anions and Gibbs energy changes due to anion exchange reactions can be studied by density function theory and molecular dynamics. The binding energy is a function of the carried charge of anions in the interlayer gallery; if the anions are of the same charge, it is linearly correlated to the interlayer spacing of LDH . In other words, if interlayer space is more than the anionic radius, the exchange rate is high; thus, due to the large anionic radius, organic ions cannot be encapsulated in the LDH structure.…”

Section: Recent Advancements In Water Electrolysismentioning

confidence: 99%

Advanced Two-Dimensional Materials for Green Hydrogen Generation: Strategies toward Corrosion Resistance Seawater Electrolysis─Review and Future Perspectives

Lokesh

Srivastava

2022

Energy Fuels

View full text Add to dashboard Cite

Excessive usage of nonrenewable resources to meet global energy requirements has become a serious concern from the energy and environmental perspective. The continuous emission of CO 2 in the environment from fossil fuels has become a major cause of global warming. Green hydrogen generation through seawater electrolysis has been an emergent technology that can play a prominent role in replacing conventional energy sources. Electrolysis of seawater using renewable sources such as solar, wind, and geothermal generates green hydrogen which has almost negligible harmful byproducts. Different ions present in seawater such as chlorides and sulfates impose serious corrosion problems during the electrolysis process as chloride ions penetrate the metal electrode surface and oxidize it and also liberate chlorine gas at the anode. For the electrolysis processes, catalysis plays a challenging task to reduce the kinetic barrier for the conversion of water molecules to hydrogen and oxygen products. Photoelectrocatalysts are another kind of semiconductor-based catalyst in which band gap, exchange charge carrier, and surface area play key roles in the water-splitting process. Two-dimensional nanomaterials offer many advantages like high specific surface area for electron transfer, high tunable functionalities, and flexible structural properties that make them suitable for different applications. Layered double hydroxide (LDH) as a highly efficient catalyst has the potential to perform the hydrogen production process as per the industrial application. LDH has many advantages in an effective water-splitting mechanism that includes easy synthesis methods, flexible morphology, long-term stability, and adaptability to different applications. Another major advantage is the corrosion inhibition property of LDH by different mechanisms like adsorption of corrosionresponsible ions, self-healing technique, and protective film formation which are discussed briefly in this review. This review provides a state-of-the-art analysis about the various important strategies to be adopted for effective seawater electrolysis. Finally, we examine the new challenges and the novel approaches to suppress corrosion processes during seawater electrolysis.

show abstract

“…The characteristic peaks located at 38.4, 44.7, 64.9 and 78° were assigned to the Al phase of AA 7075 alloy [45]. In addition, peaks occurring at around 10 and 20° suggest the formation of LDH intercalated with NO3 - [28,29,[45][46][47][48]. However, slight shifts of the diffraction peaks ascribed to (003) and (006) reflections suggest the cerium species intercalated in the hydrotalcite structure.…”

Section: Fig 1 Evolution Of Open Circuit Potential Vs Conversion Time...mentioning

confidence: 99%

Cerium-based conversion films developed on LiAl-layered double hydroxide coatings for corrosion protection of AA7075 aluminum alloys

Petica

Manea

Mihai

et al. 2022

J. Electrochem. Sci. Eng.

View full text Add to dashboard Cite

The paper presents several experimental results regarding the influence of various procedures applied to incorporate Ce species in hydrotalcite–type chemical conversion coatings on the overall corrosion performance for AA 7075 aluminum alloy as a metallic substrate. Two routes were envisaged: (i) chemical incorporation of Ce by immersion in cerium nitrate solutions and (ii) electrochemical deposition of hydrophobic Ce - based layer involving ethanolic solutions of stearic acid and cerium nitrate. The chemical route involving immersion in cerium nitrate solutions led to the incorporation of 2.46 – 6.84 wt.% Ce in the composition of the porous conversion layer. The electrochemical process facilitated the formation of a hydrophobic cerium stearate layer on porous hydrotalcite conversion coating showing water contact angles of about 132o and a higher Ce content incorporated of 6.55 – 9.73 wt.%. The corrosion performance of the Ce-based conversion coatings is also discussed.

show abstract

Corrosion resistance of a silane/ceria modified Mg-Al-layered double hydroxide on AA5005 aluminum alloy

Cited by 13 publications

References 48 publications

Ce-Doped-MgAl Superhydrophobic Layered Double Hydroxide for Enhanced Corrosion Resistance Properties

Ce-Doped-MgAl Superhydrophobic Layered Double Hydroxide for Enhanced Corrosion Resistance Properties

Advanced Two-Dimensional Materials for Green Hydrogen Generation: Strategies toward Corrosion Resistance Seawater Electrolysis─Review and Future Perspectives

Cerium-based conversion films developed on LiAl-layered double hydroxide coatings for corrosion protection of AA7075 aluminum alloys

Contact Info

Product

Resources

About