Microstructural and corrosion behavior of MAO coated 5052 aluminum alloy

Sunilraj, S.; Blessto, B.; Muthupandi, V.

doi:10.1016/j.matpr.2020.08.755

Cited by 9 publications

(6 citation statements)

References 21 publications

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“…The faster the casting speed is, the deeper the liquid hole in the ingot is. It is more unfavorable for gas discharging but more conducive to the formation of air hole porosity [11,12].…”

Section: Resultsmentioning

confidence: 99%

Lamination Effect on Al-Mn Alloy During Can Forming

Yan

2023

J. Phys.: Conf. Ser.

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Fracture behavior of Al-Mn alloy after plastic deformation is studied by electron microscopy. Cracked can is mainly caused by the lamination of the Al-Mg alloy plate. Optimized melt treatment is the main way to solve the problem of lamination caused by microporosity. Microporosity can be eliminated by adjusting the casting speed and other technological parameters. As a result, the behavior of lamination of Al-Mn alloy during deformation is weakened. The rate of cracked cans in the process is reduced subsequently.

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“…The faster the casting speed is, the deeper the liquid hole in the ingot is. It is more unfavorable for gas discharging but more conducive to the formation of air hole porosity [11,12].…”

Section: Resultsmentioning

confidence: 99%

Lamination Effect on Al-Mn Alloy During Can Forming

Yan

2023

J. Phys.: Conf. Ser.

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“…α-Al 2 O 3 is the stable phase and γ-Al 2 O 3 is the sub-stable phase (Wang et al , 2020a). The nucleation rate of α-Al 2 O 3 in the electrolyte was lower than γ-Al 2 O 3 due to uneven cooling rates (Sunilraj et al , 2021). The presence of SiC material peaks indicates that nanoparticles have been integrated into the coating.…”

Section: Resultsmentioning

confidence: 99%

Local electrochemical corrosion performance of nano-SiC/MAO composite coating on 6061-Al alloy

Liu

Jie²,

Yang³

et al. 2022

ACMM

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Purpose The purpose of this paper is to improve the corrosion resistance of the 6061-Al alloy as the battery pack material for electric vehicles, and the nano-SiC/MAO composite coating was prepared. Design/methodology/approach The corrosion resistance of coatings was evaluated by the global electrochemical test, and the local electrochemical impedance spectroscopy (LEIS) was used to study the local corrosion mechanism. The laser confocal microscope, scanning electron microscope and X-ray diffractometer (XRD) were used to characterise coatings. Findings Results showed that the impedance of nano-SiC/MAO coating was 1–2 times higher than MAO coating, and the main corrosion product was Al(OH)3. LEIS results showed that the impedance of the nano-SiC/MAO coating was two times higher than the MAO coating. The defective SiC/Micro-arc oxidation coating still had high corrosion resistance compared to the MAO coating. Originality/value The physical model of the local corrosion mechanism for SiC/MAO composite coating in “cavity-fracture collapse” mode was proposed.

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“…It can be seen that the four composite coatings exhibited typical crater-like morphologies with uniform pore distributions. The pores on the surface of the MAO coatings were not completely covered by the Cu-(HEA)N films, maintaining the typical feature of microarc oxidation coatings [35][36][37]. Figure 2 shows that the nanoscale representation of the deposited Cu-(HEA)N films on micron-scale MAO layers had no obvious effect on the surface morphology of the MAO coating.…”

Section: Analysis Of Surface Morphology and Compositionmentioning

confidence: 95%

“…The friction coefficient of the TC4 material fluctuated significantly in simulated seawater with values ranging from 0.3 to 0.8. The TC4 material had a relatively low hardness and high viscosity [37]. With continuous friction of the grinding ball and the TC4 surface, the material viscosity and wear contact surface increased together with the increasing frictional force.…”

Section: Wear Resistancementioning

confidence: 99%

Microstructure and Properties of MAO-Cu/Cu-(HEA)N Composite Coatings on Titanium Alloy

Wang¹,

Li²,

Zhang

et al. 2022

Coatings

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In this paper, MAO-Cu/Cu-(HEA)N composite coatings on TC4 titanium alloy were prepared by combining micro arc oxidation (MAO) with magnetron sputtering (MS) to enhance the wear resistance and antibacterial ability of the substrate in simulated seawater. The number of micropores on the surface of the composite coatings decreased with increasing CuSO4 concentration in the electrolyte, causing the surfaces to be flat and smooth. XPS and EDS analyses revealed that the MAO-Cu/Cu-(HEA)N composite coatings predominately contained TiO2, Cu2O, and (HEA)N. Moreover, the addition of CuSO4 increased the growth rate of the MAO coatings. Comparatively, the MAO-Cu/Cu-(HEA)N composite coating with 5 g/L CuSO4 showed superior wear resistance, reduced friction coefficient (approximately 0.2), and shallow and narrow grinding cracks were observed compared to the other coatings. Antibacterial experiments showed that the MAO-Cu/Cu-(HEA)N composite coatings had better bacterial killing effects than the TC4 substrate, which is of great significance to the antifouling abilities of titanium alloys in marine applications.

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Microstructural and corrosion behavior of MAO coated 5052 aluminum alloy

Cited by 9 publications

References 21 publications

Lamination Effect on Al-Mn Alloy During Can Forming

Lamination Effect on Al-Mn Alloy During Can Forming

Local electrochemical corrosion performance of nano-SiC/MAO composite coating on 6061-Al alloy

Microstructure and Properties of MAO-Cu/Cu-(HEA)N Composite Coatings on Titanium Alloy

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