Improved corrosion and wear resistance of micro-arc oxidation coatings on the 2024 aluminum alloy by incorporation of quasi-two-dimensional sericite microplates

Ke, Xi; Wu, Hao; Zhou, Chilou; Qi, Ziyang; Yang, Kailong; Fu, Ricky K.Y.; Xiao, Shuhu; Wu, Guosong; Ding, Kejian; Chen, Guohua; Chu, Paul K.

doi:10.1016/j.apsusc.2022.152693

Cited by 48 publications

(11 citation statements)

References 88 publications

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“…It is therefore inferred that the corrosion resistance of the composite coating is significantly enhanced by the NiCrAlSi layer. More positive E corr and lower i corr are generally indicative of greater corrosion resistance [31]. The observed variations in E corr and i corr across the samples provide insights into the corrosion dynamics of the coatings.…”

Section: Corrosion Behavior Of the Ni/nicr/nicralsi Coatingmentioning

confidence: 87%

Corrosion Behavior of Ni/NiCr/NiCrAlSi Composite Coating on Copper for Application as a Heat Exchanger in Sea Water

Du,

Wen,

Song

et al. 2023

Nanomaterials

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This study introduces a novel Ni/NiCr/NiCrAlSi composite coating to enhance the corrosion resistance of copper, particularly for its use in marine heat exchangers. Utilizing characterization techniques such as scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS), the paper investigates the coating’s composition, structure, and corrosion resistance in 3.5 wt.% NaCl aqueous solutions. A significant focus is placed on the role of aluminum within the NiCrAlSi layer, examining its influence on the coating’s structure and corrosion behavior. The results indicate that the NiCrAlSi layer with an aluminum content of 5.49 at.% exhibits the most improved corrosion resistance, characterized by the highest corrosion potential and a corrosion current density that is more than one order of magnitude lower compared to the Ni/NiCr coating. The effectiveness of this composite coating is attributed to its multilayer structure and the synergistic effect of alloying elements Cr, Al, and Si, which collectively inhibit corrosive medium penetration. These insights present the Ni/NiCr/NiCrAlSi coating as a promising candidate for copper protection in sea water environments, merging enhanced durability with cost-effectiveness.

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Section: Corrosion Behavior Of the Ni/nicr/nicralsi Coatingmentioning

confidence: 87%

Corrosion Behavior of Ni/NiCr/NiCrAlSi Composite Coating on Copper for Application as a Heat Exchanger in Sea Water

Du,

Wen,

Song

et al. 2023

Nanomaterials

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“…However, the MAO-10 sample had a relatively complete morphology after immersion for 15 days (Figure 11D). Previous literatures 19 suggested that the main chemical reactions occurring in the corrosion process of Al-Mg alloy in 3.5% wt NaCl solution have been discussed in detail. In the corrosion process of Al-Mg alloy, the anodic activity mainly came from the dissolution of Al and alloying element Mg.…”

Section: Potentiodynamic Polarization Tests and Immersion Testsmentioning

confidence: 99%

Effect of Na₂SiO₃ concentration on corrosion resistance and wear resistance of MAO ceramic film on the Al‐Mg‐Sc alloy

Jiang

2023

Int J Applied Ceramic Tech

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Although Al-Mg-Sc alloy was widely applied to aviation aerospace field, they were vulnerable to local corrosion and wear in the process of long-term service in severe environmental conditions. In this paper, micro-arc oxidation (MAO) ceramic films on Al-Mg-Sc alloy substrate were prepared in electrolyte solutions with different Na 2 SiO 3 concentrations, and the corrosion resistance and wear resistance of the MAO samples were studied. The experimental results of potentiodynamic polarization (PDS) and long-term immersion tests indicated that the MAO ceramic film prepared in 10 g/L Na 2 SiO 3 electrolyte solution had the best corrosion resistance, as manifested by no obvious cracks, serious collapse and corrosion products on the sample surface and no deep cracks and corrosion paths in the cross-sectional area. The increase of Na 2 SiO 3 concentration in electrolyte solution also improved the wear resistance of MAO ceramic film, as manifested by low wear depth (10 μm)and width (1 mm) of the MAO ceramic film prepared in 10 g/L Na 2 SiO 3 electrolyte solution against GCr15 steel ball. Studies in mechanisms suggested that as the Na 2 SiO 3 concentration in the electrolyte increased, the MAO ceramic film became denser, which could prevent the penetration of corrosive medium, promote the generation of the anti-wear layer with SiO 2 as the main component to enhance the wear resistance. MAO ceramic film formed in Na 2 SiO 3 electrolyte solution provided good protective performance for Al-Mg-Sc alloy in the corrosion and wear conditions, which had a broader application prospect.

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“…8. The nonmodi ed substrate's COF remains inconsistent during the two hours of processing, demonstrating a high variability of COF value [50], reaching values close to 1.1 when stabilized.…”

Section: Tribological Performancementioning

confidence: 99%

Tribological and corrosion behavior of PEO coatings on AA 2024-T3 aluminum alloy obtained with optimized electrical parameters under low current densities.

Dorneles,

de Castro,

Junior

et al. 2023

Preprint

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PEO coatings AA 2024-T3 aluminum alloy samples were obtained with low current densities and an optimized relationship between anodic and cathodic charges were used aiming to evaluate the effect on tribological and corrosion resistance behavior and increase energy efficiency. The results show that, according to the increase in time, new phases are formed in the ceramic coating. Furthermore, the good ratio between cathodic and anodic charges suggested in the literature, allow thick coatings to be achieved with high hardness, even with low current densities and short PEO process times. The characterization of the coating by GIXRD analysis evidenced that, with an increase in time, new phases are formed. All the obtained coatings improved wear and corrosion resistance, when compared to the uncoated substrate, and the coating obtained after 10 minutes showed the best performance in wear and corrosion resistance. These optimized electrical parameters allowed optimization of the energy efficiency to obtain the α-Al2O3 phase, which other authors reported as a possible result, only by using a greater amount of energy and longer formation time. This indicates the greater efficiency of the operational parameters used in this study, to obtain a coating with very good wear properties by the PEO process.

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Improved corrosion and wear resistance of micro-arc oxidation coatings on the 2024 aluminum alloy by incorporation of quasi-two-dimensional sericite microplates

Cited by 48 publications

References 88 publications

Corrosion Behavior of Ni/NiCr/NiCrAlSi Composite Coating on Copper for Application as a Heat Exchanger in Sea Water

Corrosion Behavior of Ni/NiCr/NiCrAlSi Composite Coating on Copper for Application as a Heat Exchanger in Sea Water

Effect of Na₂SiO₃ concentration on corrosion resistance and wear resistance of MAO ceramic film on the Al‐Mg‐Sc alloy

Tribological and corrosion behavior of PEO coatings on AA 2024-T3 aluminum alloy obtained with optimized electrical parameters under low current densities.

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Improved corrosion and wear resistance of micro-arc oxidation coatings on the 2024 aluminum alloy by incorporation of quasi-two-dimensional sericite microplates

Cited by 48 publications

References 88 publications

Corrosion Behavior of Ni/NiCr/NiCrAlSi Composite Coating on Copper for Application as a Heat Exchanger in Sea Water

Corrosion Behavior of Ni/NiCr/NiCrAlSi Composite Coating on Copper for Application as a Heat Exchanger in Sea Water

Effect of Na2SiO3 concentration on corrosion resistance and wear resistance of MAO ceramic film on the Al‐Mg‐Sc alloy

Tribological and corrosion behavior of PEO coatings on AA 2024-T3 aluminum alloy obtained with optimized electrical parameters under low current densities.

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Effect of Na₂SiO₃ concentration on corrosion resistance and wear resistance of MAO ceramic film on the Al‐Mg‐Sc alloy