Enhanced protective Zn–Al layered double hydroxide film fabricated on anodized 2198 aluminum alloy

Li, Yingdong; Li, Songmei; Zhang, You; Yu, Mei; Liu, Jianhua

doi:10.1016/j.jallcom.2014.12.176

Cited by 86 publications

(48 citation statements)

References 24 publications

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“…In this case, the X‐ray photoelectron spectroscopy (XPS) studies had the capability to unambiguously show the presence of Fe 3+ in the hydroxides layers and the coordination of Mg 2+ and Al 3+ ions, as well as the presence of anions (carbonates) in the interlayer space. Recently, XPS measurements have been performed to investigate the valence state of Vanadium in (Zn, Al) LDH samples with VO 3− vanadate anions intercalated in the interlamellar space, used as corrosion inhibitor . Wen et al used XPS spectroscopy to clarify the surface state of LDH and graphene oxide nanocomposites, before and after the Arsenic anions removals from aqueous solutions.…”

Section: Introductionsupporting

confidence: 90%

Surface spectroscopy and structural analysis of nanostructured multifunctional (Zn, Al) layered double hydroxides

Richetta

Digiamberardino

Mattoccia

et al. 2016

Surface & Interface Analysis

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Two types of (Zn, Al) layered double hydroxide were prepared by a hydrothermal process at room temperature using Zn salt precursors on Al foils. The examined LDHs differ for the hosted anions in the interlamellar space, namely Cl À and NO 3 À . Scanning electron microscopy, X-ray photoelectron spectroscopy and ultraviolet photoemission spectroscopy have been used to characterize four types of the samples, representative of the two hosted anions (Cl À and NO 3 À ) and two times of growth (6 and 24 h). X-ray photoelectron spectroscopy results permitted to describe the interactions between inorganic anions hosted in the interlamellar space and the metallic cations on the brucite layer. They also allowed giving a tentative explanation of the different morphologies observed by scanning electron microscopy.

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Section: Introductionsupporting

confidence: 90%

Surface spectroscopy and structural analysis of nanostructured multifunctional (Zn, Al) layered double hydroxides

Richetta

Digiamberardino

Mattoccia

et al. 2016

Surface & Interface Analysis

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show abstract

“…Furthermore, R ct of LDH‐VO 3 is significantly higher than that of LDH‐NO 3 . This result may indicate that the inhibitor gradually releases and effectively delays the corrosion reaction …”

Section: Resultsmentioning

confidence: 99%

“…However, this method without introduction of any kinds of divalent and trivalent metal salts is only available for the Al‐rich magnesium alloys. Currently, several studies have been focused on the preparation of LDH films on anodized aluminum alloy. This novel method has several advantages over the other methods: (i) Both anodic films/substrate and LDHs/anodic films exhibit the superior adhesion.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to Fabricate Protective Layered Double Hydroxide Films on the Surface of Anodized Mg‐Al Alloy

Zhang

Tang

et al. 2017

Adv Materials Inter

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In this work, anodic films consisted of a mixed oxide of aluminum and magnesium are developed on magnesium alloy by anodizing process. Then, MgAl-layered double hydroxide (LDH) films are prepared by using this anodic film as a source of cations, without the introduction of any kinds of trivalent metal salts. After that, inhibitor anions of vanadate are intercalated into the interlayer galleries of LDHs through anion-exchange process. LDH conversion films are investigated by scanning electron microscope, energy dispersive spectrum, X-ray diffractometer, and Fourier transform infrared, respectively. Furthermore, the corrosion resistance of LDH conversion films are studied by potentiodynamic polarization, electrochemical impedance spectroscopy, and immersion test in NaCl solution, respectively. The results show that uniform and fine LDH films are successfully fabricated by using only anodic films, and the pores in anodic films are successfully sealed by LDHs. Moreover, the vanadate loaded LDHs exhibit better corrosion resistance compared to LDHs without vanadate.

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“…Synthesis of LDH-NO 3 on the PEO-coated AA2024 specimen led to the coverage of the surface with a layer of flake-like microstructures (Figure 2b). These flakes are significantly smaller in comparison with those previously published for TSA (tartaric sulfuric acid anodization)-treated surface (200-400 nm vs. 1-5 µm for TSA treatment) [20]. Thus, growth-limiting factors must determine the LDH formation process.…”

mentioning

confidence: 56%

“…Recently, layered double hydroxides (LDHs) have been widely studied as possible green containers for the active corrosion protection of bare [12][13][14][15][16][17][18], pre-anodized [19,20], and PEO-coated [21,22] aluminum alloys. LDH films have been grown in-situ, intercalated with corrosion inhibitors, and used for "smart" controlled corrosion protection as a result of anion exchange between inhibiting species…”

Section: Introductionmentioning

confidence: 99%

Role of Phase Composition of PEO Coatings on AA2024 for In-Situ LDH Growth

et al. 2017

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Plasma electrolytic oxidation (PEO) is an environmentally friendly anodizing technique leading to the formation of a ceramic-like coatings under high-voltage discharges. Layered double hydroxides (LDHs) were grown directly on γ, α, and amorphous Al 2 O 3 powders, respectively, in order to investigate the phase responsible for in-situ LDH growth on PEO coating. Furthermore, it is shown that LDH growth is limited by the high tortuosity of the PEO layer and the accessibility of Al(OH) − 4 anions from the substrate covered with thin amorphous aluminum oxide, through the pores.

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Enhanced protective Zn–Al layered double hydroxide film fabricated on anodized 2198 aluminum alloy

Cited by 86 publications

References 24 publications

Surface spectroscopy and structural analysis of nanostructured multifunctional (Zn, Al) layered double hydroxides

Surface spectroscopy and structural analysis of nanostructured multifunctional (Zn, Al) layered double hydroxides

A Novel Approach to Fabricate Protective Layered Double Hydroxide Films on the Surface of Anodized Mg‐Al Alloy

Role of Phase Composition of PEO Coatings on AA2024 for In-Situ LDH Growth

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