A nickel-underlayer/LDH-midlayer/siloxane-toplayer composite coating for inhibiting galvanic corrosion between Ni layer and Mg alloy

Li, Yanqiu; Ouyang, Yongzhong; Fang, Rui; Jiang, Xiao Hui; Xie, Zhihui; Wu, Liang; Long, Jilan; Zhong, Chuan‐Jian

doi:10.1016/j.cej.2021.132776

Cited by 14 publications

(11 citation statements)

References 50 publications

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“…The cured layer exhibited a high contact angle (u c ) of 152.6°and a stable impedance after exposure to a 3.5 Wt.% NaCl solution for 30 days but cannot provide durable protection under mechanical damage. To address this issue, automatic repair through the dynamic coordination of catechol-Cu 21 was introduced to construct a self-healing SHPS on Mg alloy (Li et al, 2022a(Li et al, , 2022b(Li et al, , 2022c. In addition, the superhydrophobicity can be rapidly restored by the rearrangement of octadecylamine/ polydimethylsiloxane (Figure 2).…”

Section: Spray or Spin Methodsmentioning

confidence: 99%

“…Moreover, the spherical SiO 2 nanoparticles remain acceptable rough surface even after wear tests, ensuring a stable SHPS. Li et al (2022aLi et al ( , 2022bLi et al ( , 2022c replaced the middle layer with an LDH layer and prepared a Ni-P/LDH/PFDTMS triple-layered coating on the Mg alloy surface. The composite coating shows a robust SHPS and is very favorable in reducing the galvanic corrosion of the Ni/Mg couple.…”

Section: Triple-layer Superhydrophobic Surfacesmentioning

confidence: 99%

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Progress in superhydrophobic surfaces for corrosion protection of Mg alloys – a mini-review

Song,

Xie,

Ding

et al. 2024

ACMM

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Purpose This paper aims to comprehensively review the preparation methods of superhydrophobic surfaces (SHPS) for corrosion protection of Mg alloy in recent years. Design/methodology/approach The preparation methods, wettability and corrosion resistance of SHPS on Mg alloy in the past three years are systematically described in this paper. Findings Two types of SHPS, including single-layer and multilayer coatings for corrosion protection of Mg alloy are summarized. Preparing multilayered coatings with multifunction is the current trend in developing SHPS on Mg alloy. Originality/value This paper reviewed the preparation methods and corrosion resistance of SHPS on Mg alloys. It provides a valuable reference for researchers to develop highly durable SHPS with excellent corrosion resistance for Mg alloys.

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Section: Spray or Spin Methodsmentioning

confidence: 99%

Section: Triple-layer Superhydrophobic Surfacesmentioning

confidence: 99%

Progress in superhydrophobic surfaces for corrosion protection of Mg alloys – a mini-review

Song,

Xie,

Ding

et al. 2024

ACMM

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“…[ 12 ] Hence, the combinations of the LDH coating and the superhydrophobic structure are anticipated to decrease the contact area between the LDHs and corrosive liquids, improving the corrosion resistance of Mg alloys. Li et al [ 13 ] reported that the ENP/LDH/PFDTMS composite coating on the Mg alloy exhibited long‐term corrosion resistance and good self‐cleaning capability after contamination. Zhu et al fabricated a protective superhydrophobic LDH coating on a Zn–Al alloyed surface of Mg alloy AZ31.…”

Section: Introductionmentioning

confidence: 99%

Double‐anticorrosion ability of in‐situ superhydrophobic MgAl‐LDH coating with excellent stability of the corrosion resistance on magnesium alloy AZ31

Han

Wang

et al. 2023

Materials & Corrosion

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We reported the realization of superhydrophobic layered double hydroxide (LDH) coating with the double-anticorrosion mechanism on magnesium alloys. This coating was prepared via in-situ growth of LDHs on the etched AZ31 alloy and the modification was caused by 1H, 1H, 2H, 2Hperfluorooctyltrimethoxysilane. The water contact angle on the coating was as large as 161°, possessing the two-scale rough structure consisting of microislands and LDH crystal nanosheets. The excellent corrosion resistance properties of the superhydrophobic LDH coating can be attributed to the double-anticorrosion mechanism associated with LDH coating and superhydrophobic structure. In addition to the active protection of LDH coating, the passive protection of superhydrophobic coating can suppress the occurrence of ion-exchange reactions, leading to excellent corrosion resistance stability.

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“…Numerous investigations were conducted using the LDH nanosheets as nano reservoirs for corrosion protection purposes. Li et al designed a triple-layer composite coating consisting of a Ni (ENP) underlayer, a Ni–Al layered double hydroxide (LDH) middle layer, and silane (PFDTMS) deposited into Mg alloy . The developed triple coating showed long-term corrosion resistance when exposed to a 3.5wt % NaCl solution with a superhydrophobic property against water and several typical drinks in daily life.…”

Section: Introductionmentioning

confidence: 99%

Multilayered LDH/Microcapsule Smart Epoxy Coating for Corrosion Protection

Ismail,

Shakoor,

Al-Qahtani

et al. 2023

ACS Omega

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A multilayered smart epoxy coating for corrosion prevention of carbon steel was developed and characterized. Toward this direction, as a first step, zinc-aluminum nitrate-layered double hydroxide (Zn/Al LDH) was synthesized using the hydrothermal crystallization technique and then loaded with dodecylamine (DOD), which was used as an inhibitor (pH-sensitive). Similarly, the synthesis of the urea-formaldehyde microcapsules (UFMCs) has been carried out using the in-situ polymerization method, and then the microcapsules (LAUFCs) were encapsulated with linalyl acetate (LA) as a self-healing agent. Finally, the loaded Zn/Al LDH (3 wt %) and modified LAUFCs (5 wt %) were reinforced into an epoxy matrix to develop a double-layer coating (DL-EP). For an exact comparison, pre-layer epoxy coatings comprising 3 wt % of the loaded Zn/Al LDH (referred to as LDH-EP), top-layer epoxy coatings comprising 5 wt % linalyl acetate urea-formaldehyde microcapsules (referred to as UFMLA COAT), and a blank epoxy coating (reference coating) were also developed. The developed epoxy coatings were characterized using various techniques such as XRD, XPS, BET, TGA, FTIR, EIS, etc. Electrochemical tests performed on the synthesized coatings indicate that the DL-EP demonstrates improved self-healing properties compared to LDH-EP and UFMLA COAT.

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A nickel-underlayer/LDH-midlayer/siloxane-toplayer composite coating for inhibiting galvanic corrosion between Ni layer and Mg alloy

Cited by 14 publications

References 50 publications

Progress in superhydrophobic surfaces for corrosion protection of Mg alloys – a mini-review

Progress in superhydrophobic surfaces for corrosion protection of Mg alloys – a mini-review

Double‐anticorrosion ability of in‐situ superhydrophobic MgAl‐LDH coating with excellent stability of the corrosion resistance on magnesium alloy AZ31

Multilayered LDH/Microcapsule Smart Epoxy Coating for Corrosion Protection

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