Improvement on corrosion resistance of micro-arc oxidized AZ91D magnesium alloy by a pore-sealing coating

Zhu, Jiyuan; Jia, Haojie; Liao, Kaijin; Li, Xianxuan

doi:10.1016/j.jallcom.2021.161460

Cited by 42 publications

(19 citation statements)

References 40 publications

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“…Titanium and titanium alloys have been widely used in aerospace engineering, marine engineering, biomedicine, and many other fields due to their high specific strength, lightweight, low-temperature resistance, and good biocompatibility [1][2][3][4]. In marine engineering, titanium and its alloys have become indispensable materials in this field.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties in Simulated Seawater of Copper-Doped Micro-arc Coatings on TC4 Alloy

Zhang

Yang

et al. 2022

Coatings

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Micro-arc oxidation (MAO) ceramic coatings were prepared on TC4 titanium alloys by adding CuSO4 to a (NaPO3)6 base solution. The microstructures of the MAO coatings were characterized by scanning electron microscopy (SEM), energy dispersive (EDS), and X-ray photoelectron spectroscopy (XPS). The corrosion resistance and wear resistance of these coatings were evaluated via hydrochloric acid immersion of weight deficit and friction tests. Those results indicated the presence of Cu in the MAO coating in the form of CuO and Cu2O. Incorporation of CuSO4 results in a thickness and roughness increase in the coating. The coating has a lower coefficient of friction (0.2) upon the addition of 4 g/L of CuSO4. The antibacterial properties of the MAO coatings were maximized at 6 g/L of CuSO4. However, the corrosion resistance of the copper-doped MAO coating did not exceed the undoped coating. This study shows that the addition of CuSO4 to the electrolyte successfully prepared copper-containing micro-arc oxidation coatings, which improved the wear resistance and antibacterial properties of the coating.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Properties in Simulated Seawater of Copper-Doped Micro-arc Coatings on TC4 Alloy

Zhang

Yang

et al. 2022

Coatings

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“…Hydrothermal treatment is also a useful method to reduce the number of micropores. After MAO-treated AZ91D alloy was immersed into 2 mol/L KOH solution for hydrothermal treatment, its corrosion rate decreased from 9.62 mm/y to 3.54 × 10 −4 mm/y [ 61 ]. Figure 3 a,b shows SEM images of the porous structure formed by MAO.…”

Section: Development Of Surface Modification Of Biodegradable Mg Alloysmentioning

confidence: 99%

Systems, Properties, Surface Modification and Applications of Biodegradable Magnesium-Based Alloys: A Review

Chen

Kolawole

et al. 2022

Materials

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In recent years, biodegradable magnesium (Mg) alloys have attracted the attention of many researchers due to their mechanical properties, excellent biocompatibility and unique biodegradability. Many Mg alloy implants have been successfully applied in clinical medicine, and they are considered to be promising biological materials. In this article, we review the latest research progress in biodegradable Mg alloys, including research on high-performance Mg alloys, bioactive coatings and actual or potential clinical applications of Mg alloys. Finally, we review the research and development direction of biodegradable Mg alloys. This article has a guiding significance for future development and application of high-performance biodegradable Mg alloys, promoting the future advancement of the magnesium alloy research field, especially in biomedicine.

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“…However, the poor anti-corrosion performance considerably hinders their further application. To improve their corrosion protection ability, all kinds of surface modification techniques have been adopted, among which covering anti-corrosion coatings on the surface of Mg alloys is considered to be an effective strategy [6][7][8][9][10][11][12][13][14][15][16]. In recent years, layered double hydroxides (LDHs) as an important inorganic nanocontainer material have become a research hotspot in the field of anticorrosion coatings, owing to their good structural tunability, anion exchangeability and thermostability [17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Enhanced corrosion protection of AZ31B magnesium alloy by MgAl-LDHs composite coatings double-doped with imidazolium ionic liquid and sodium dodecylbenzenesulphonate

Liu

Huangfu

Gao

et al. 2023

Corrosion Engineering, Science and Technology

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Herein, we prepare two types of MgAl-LDHs coatings single-doped by imidazolium ionic liquid 1decyl-3-methylimidazolium bromide ([Demim]Br) or sodium dodecylbenzenesulphonate (SDBS) and double-doped by [Demim]Br and SDBS on AZ31B Mg alloy by using an in-situ hydrothermal treatment. Their surface morphology and corrosion resistance immersed in 3.5 wt-% NaCl solution are explored. Our results suggest that the double doping of [Demim]Br and SDBS will change the surface morphology of the coating and a uniform and dense film is observed in the double-doped MgAl-LDHs, which is denser than those of the two single-doped MgAl-LDHs coatings, thus providing a superior corrosion resistance. Such an improvement can be ascribed to the synergetic inhibition effect of [Demim]Br and SDBS against the corrosion of the Mg alloy substrate. More importantly, the charge transfer resistance of the sample coated with the double-doped MgAl-LDHs is still high after 3 d of immersion, benefiting from the excellent self-healing effect.

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Improvement on corrosion resistance of micro-arc oxidized AZ91D magnesium alloy by a pore-sealing coating

Cited by 42 publications

References 40 publications

Microstructure and Properties in Simulated Seawater of Copper-Doped Micro-arc Coatings on TC4 Alloy

Microstructure and Properties in Simulated Seawater of Copper-Doped Micro-arc Coatings on TC4 Alloy

Systems, Properties, Surface Modification and Applications of Biodegradable Magnesium-Based Alloys: A Review

Enhanced corrosion protection of AZ31B magnesium alloy by MgAl-LDHs composite coatings double-doped with imidazolium ionic liquid and sodium dodecylbenzenesulphonate

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