Formation of Aluminum Composite Passive Film on Magnesium Alloy by Integrating Sputtering and Anodic Aluminum Oxidation Processes

Ko, Chi-Liang; Kuo, Yu‐Lin; Chen, Shih-Hsun; Chen, Song-Yu; Guo, Jhao-Yu; Wang, Yanjie

doi:10.1016/j.tsf.2020.138151

Cited by 19 publications

(6 citation statements)

References 35 publications

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“…The adhesion strength is a basic requirement for corrosion protection and the adhesion cross-cut tape ACCT test [20] was used to check the adhesion of the coating. There are small pieces peeling at the intersection of the cuts and less than 5% of the coating was removed.…”

Section: Resultsmentioning

confidence: 99%

Corrosion-resistant coating on AZ91D magnesium alloy based on one-step hydrothermal

Jiang

Zhu

2023

Corrosion Engineering, Science and Technology

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Magnesium alloys are widely used due to their excellent properties, but their corrosion resistance is limited by their high chemical activity. This paper proposes a one-step hydrothermal method with a relatively short reaction time and simple experimental steps for synthesising magnesium alloy coatings with good corrosion protection properties. The surface morphology, chemical composition and corrosion resistance of the in situ generated coatings were investigated using measurements such as field emission scanning electron microscopy (SEM), adhesion cross-cut tape (ACCT) test, X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), electrochemistry and immersion test, the results revealed that the corrosion current density (I corr ) of the coatings decreased by approximately four orders of magnitude and had good corrosion resistance.

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Section: Resultsmentioning

confidence: 99%

Corrosion-resistant coating on AZ91D magnesium alloy based on one-step hydrothermal

Jiang

Zhu

2023

Corrosion Engineering, Science and Technology

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“…Therefore, a higher RT creates a thicker formed oxide layer. According to Refs., 23,24 it was reported that the increase of the RT increases the thickness of the oxide layer for the aluminum alloys.…”

Section: Thickness Measurementmentioning

confidence: 99%

Micro- and macro-scale characterization of the microstructure and scratch resistance of the 5083-anodic aluminum oxide film

Abid

Cruz

Kchaou

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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This paper focuses on the thickness, microstructural, and scratch resistance of the sulfuric oxide layer of 5083-aluminum alloy for different anodizing durations/reaction times (RT = 30, 60, and 90 min). The thickness and the microstructure analyses were carried out using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy, and ImageJ post-processing software. The scratch resistance was investigated using macro- and micro-scratch tests. Experimental results revealed that the oxide layer was covered by larger-sized microcavities and a thicker oxide layer for 90 min RT. Moreover, the area, which was covered by microcavities percentage, was decreased for 60 min RT and increased for 90 min RT. Besides, using the macro-scratch test, and when increasing RT, no micro-cracks were detected inside the scratch mark. Nerveless, the increasing of the normal load was shown that the oxide layer was more resistant to scratch. Finally, the 5083-aluminum alloy oxide layer had a high-scratch resistance such as a weak penetration depth and a low friction coefficient.

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“…The corrosion potential (Ecorr), corrosion current density (ico and corrosion protection efficiency (PE) are applied to estimate the anti-corrosive proper of the coatings, where specific values are depicted in Table 3. The Ecorr and icorr are obtain from the acquired polarization curves, and the PE is computed from the calculated i [53,54]. In general, the icorr can directly reflect the corrosion resistance of the material [5 Compared with the matrix, the Ecorr of the anodic oxidation coating is positively shift and the icorr decreases (Figure 8 and Table 3).…”

Section: Corrosion Behaviormentioning

confidence: 99%

Achieving Superior Corrosion Resistance of TiB2 Reinforced Al-Zn-Mg-Cu Composites via Optimizing Particle Distribution and Anodic Oxidation Time

Li,

Gao,

Liu

et al. 2023

Coatings

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In this study, the effects of particle distribution and anodizing time on the microstructure and corrosion resistance of the TiB2 particle-reinforced Al-Zn-Mg-Cu composite were investigated. Relationships between TiB2 particle distribution, anodizing time, coating growth rule, and corrosion resistance were characterized and discussed using an optical microscope, a scanning electron microscope, an electrochemical test, and a salt spray test. Dispersion of TiB2 particles by powder metallurgy improved the corrosion resistance of the anodized coating on composites. Compared with the matrix, the corrosion potential (Ecorr) of the anodized coating shifted to the positive direction, and the corrosion current density (icorr) decreased. Meanwhile, the icorr of the coating decreased initially and then increased with the extension of the anodization time. The corrosion resistance of the coating was optimal at an anodization time of 20 min. The corrosion resistance of the composite was determined by both the porosity and thickness of the coating. Additionally, all samples treated by potassium dichromate sealing had no corrosion points after a 336-h salt spray test, demonstrating an excellent corrosion resistance suitable for harsh environmental applications in industry.

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Formation of Aluminum Composite Passive Film on Magnesium Alloy by Integrating Sputtering and Anodic Aluminum Oxidation Processes

Cited by 19 publications

References 35 publications

Corrosion-resistant coating on AZ91D magnesium alloy based on one-step hydrothermal

Corrosion-resistant coating on AZ91D magnesium alloy based on one-step hydrothermal

Micro- and macro-scale characterization of the microstructure and scratch resistance of the 5083-anodic aluminum oxide film

Achieving Superior Corrosion Resistance of TiB2 Reinforced Al-Zn-Mg-Cu Composites via Optimizing Particle Distribution and Anodic Oxidation Time

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