A Nano-CeO2/Zn–Mn Composite Conversion Coatings on AZ91D Magnesium Alloy Surface of Corrosion Resistance Research
Source abstract
Abstract
The modified nano-CeO2/Zn–Mn phosphate composite coating was deposited on AZ91D magnesium alloy by chemical conversion to enhance its densification and corrosion resistance. The growth mechanism and corrosion resistance of the composite coating is clarified by adding different concentrations of ZnO and a certain amount of nano-CeO2 into the phosphate-plating solution. XRD and EDS show that the composite membrane is mainly composed of MgO, Mg(OH)2, Mn3(PO4)2·5H20, Zn, Zn3(PO4)2·4H2O and CeO2. Among them, AZ91D magnesium alloy matrix presents dispersed granule, clustered and petal-shaped under the action of different concentrations of ZnO. Under the optimum ZnO concentration, after adding nano-CeO2, dense grains appear, and cracks and pores in the riverbed are obviously reduced. Compared with single-layer phosphate coating, the performance of composite coating is significantly improved. The results show that the obvious double-layer structure is observed by SEM, and the thickness of the coating is about 48 μm. The LCSM shows that the surface roughness of composite coating is moderate. EIS shows that when the fitting impedance is 8050.43 Ω and PH = 3, the dropping time of copper sulfate in the composite coating is 58.6 s, which is better than that in the single-layer coating. The Tafel polarization fitting curve shows that the corrosion current density of the composite coating is obviously lower than that of the single coating, the corrosion current density is decreased from 1.86 × 10−6 A/cm2 to 9.538 × 10−7 A/cm2, and the corrosion resistance is obviously improved.
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Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Corrosion Behavior and Inhibition · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, China
School of Materials Science and Engineering, Northeastern University, Shenyang 110016, China
Funding
National Natural Science Foundation of China · National Natural Science Foundation of China (NSFC) · Basic Research Project of Liaoning Provincial Education Department
References (41)
Show source-provided references
1. Khisamov, R., Shayakhmetov, R., Yumaguzin, Y.M., and Kistanov, A. (2023). Work Function, Sputtering Yield and Microhardness of an Al-Mg Metal-Matrix Nanostructured Composite Obtained with High-Pressure Torsion. Coatings, 13.10.3390/app13085007 ↗
2. Tun, K.S., Brendan, T.Y.S., Tekumalla, S.Y., and Gupta, M.J. (2021). Development from Alloys to Nanocomposite for an Enhanced Mechanical and Ignition Response in Magnesium. Coatings, 11.10.3390/met11111792 ↗
3. Advances in bioorganic molecules inspired degradation and surface modifications on Mg and its alloys
4. Yang, Q.X., Tabish, M.H.M., Wang, J.B., and Zhao, J.M. (2022). Enhanced Corrosion Resistance of Layered Double Hydroxide coatings on Mg Alloy: The Key Role of Cationic Surfactant. Materials, 15.10.3390/ma15062028 ↗
5. Wang, B.J., Hou, J.Y., Luan, J.Y., Xu, D.K., Sun, H.J., and Sun, J. (2023). The Corrosion Behaviors of an As-Rolled Mg-8Li (in wt.%) Alloy in Two Differently Concentrated NaCl Solutions. Coatings, 12.10.3390/coatings12030406 ↗
6. Salsabila, A.L., Pratama, A.Y., Nurrochman, A.A., and Hermawan, H.D. (2023). Preparation of Tannic Acid/Hyaluronic Acid Coating to Improve the Corrosion Resistance of Implant Material Based on AZ31B Magnesium Alloy. Coatings, 13.10.3390/met13030494 ↗
7. Li, T.L., Zhao, Y., and Chen, M.F. (2022). Study on Enhancing the Corrosion Resistance and Photo-Thermal Antibacterial Properties of the Micro-Arc Oxidation Coating Fabricated on Medical Magnesium Alloy. Int. J. Mol. Sci., 23.10.3390/ijms231810708 ↗
8. Latest research advances on magnesium and magnesium alloys worldwide10.1016/j.jma.2021.04.001 ↗
9. Microstructural, Mechanical, and Corrosion Properties of AZXX Magnesium Alloy: A Review of Processing Methods
10. Effect of icosahedral phase on the crystallographic texture and mechanical anisotropy of duplex structured Mg-Li alloys10.1016/j.matdes.2015.08.123 ↗
11. Chen, J.X., Xu, Y., Kolawole, S.F.D., Wang, J.H., Su, X.P., Tian, L.I., and Yang, K. (2022). Systems, Properties, Surface Modification and Applications of Biodegradable Magnesium-Based Alloys: A Review. Materials, 15.10.3390/ma15145031 ↗
12. Sun, W.T., Bian, G.X., Jia, L.I., Pai, J.J., Ye, Z.H., Wang, N., Qi, J.T., and Li, T.J. (2023). Study of Trivalent Chromium Conversion Coating Formation at Solution—Metal Interface. Metals, 13.10.3390/met13010093 ↗
13. Anisotropic corrosin behavior of hot-rolled Mg-8wt.% Li alloy10.1016/j.jmst.2020.04.029 ↗
14. Effects of Nd on microstructure and mechanical properties of as-cast Mg-8Li-3Al alloy10.1016/S1002-0721(12)60078-7 ↗
15. Sudarsanam, P.; Benjaram, M. Rare earth doped CeO2 -based catalytic materials for diesel soot oxidation at lower temperatures
16. Preparation and characterization of nanostructured dibasic calcium phosphate coating on magnesium alloy wire10.1016/j.matlet.2017.08.036 ↗
17. Corrosion behavior of Mg-8Li-3Zn-Al alloy in neutral 3.5% NaCl solution10.1016/j.jma.2015.12.002 ↗
18. Corrosion Behaviour of Magnesium Lithium Alloys in NaCl Solution10.4028/www.scientific.net/SSP.227.87 ↗
19. The study of a phosphate conversion coating on magnesium alloy AZ91D: IV. Comparison of electrochemical behaviors in borate buffer and sodium chloride solutions10.20964/2019.12.44 ↗
20. Comparison of the corrosion behaviour of AZ31B magnesium alloy under immersion test and potentiodynamic polarization test in NaCl solution10.1016/j.jma.2014.01.004 ↗
21. Xie, J.S., Zhang, J.H., Liu, S.J., You, Z.H., Zhang, Z., Zhao, T.F., Zhang, X.B., and Wu, R.Z. (2023). Developing Mg-Gd-Dy-Ag-Zn-Zr Alloy with High Strength via Nano-Precipitation. Coatings, 13.10.3390/nano13071219 ↗
22. Corrosion behavior of AZ31 magnesium alloy in simulated acid rain solution10.1016/S1003-6326(10)60553-5 ↗
23. Corrosion behavior of Mg-Li alloys: A review10.1016/S1003-6326(21)65728-X ↗
24. Zhang, Z.Y., Zhang, J., Zhao, X.Y., Cheng, X.Q., Jiang, S.M., and Zhang, Q.F. (2023). Effects of Al-Mg on the Microstructure and Phase Distribution of Zn-Al-Mg Coatings. Coatings, 13.10.3390/met13010046 ↗
25. Stojadinovic, S., Radic, N.N., and Vasilic, R.K. (2023). ZnO Particles Modified MgAl Coatings with Improved Photocatalytic Activity Formed by Plasma Electrolytic Oxidation of AZ31 Magnesium Alloy in Aluminate Electrolyte. Coatings, 12.10.3390/catal12121503 ↗
26. Hybrid sol-gel coatings based on silanesamino acids for corrosion protection of AZ91 magnesium alloy: Electrochemical and DFT insights10.1016/j.porgcoat.2019.01.052 ↗
27. Alternative conversion coatings to chromate for the protection of magnesium alloys10.1016/j.corsci.2014.03.021 ↗
28. Sun, D. Microstructure evolution and corrosion resistance of multi interface AlTiAlN nano-composite ficoatings on AZ91D magnesium alloy10.1016/j.surfcoat.2018.09.019 ↗
29. Mechanical characterization and single asperity scratch behaviour of dry zinc and manganese phosphate coatings10.1016/j.triboint.2017.04.034 ↗
30. Hu, L., Gao, B., Xu, N., Sun, Y., Zhang, Y., and Xing, P.F. (2022). Effect of Cerium and Magnesium on Surface Microcracks of Al–20Si Alloys Induced by High-Current Pulsed Electron Beam. Coatings, 12.10.3390/coatings12010061 ↗
31. Effect of lithium content on the mechanical and corrosion behaviors of HCP binary Mg-Li alloys10.1016/j.jma.2020.02.022 ↗
32. A high-specifific-strength and corrosion-resistant magnesium alloy10.1038/nmat4435 ↗
33. Corrosion characteristics and protection technology of magnesium alloy
34. Enhanced corrosion performance of magnesium pHospHate conversion coating on AZ31 magnesium alloy10.1016/S1003-6326(17)60127-4 ↗
35. Gnedenkov, A.S., Filonina, V.S., Sinebryukhov, S.L., and Gnedenkov, S.V. (2023). A Superior Corrosion Protection of Mg Alloy via Smart Nontoxic Hybrid Inhibitor-Containing Coatings. Molecules, 28.10.3390/molecules28062538 ↗
36. Advances in degradation behavior of biomedical magnesium alloys: A review10.1016/j.jallcom.2022.164600 ↗
37. Composition and microstructure dependent corrosion behaviour of Mg-Li alloys10.1016/j.electacta.2017.11.091 ↗
38. A review of stress-corrosion cracking and corrosion fatigue of magnesium alloys for biodegradable implant applications10.1007/s11837-015-1366-z ↗
39. Advances in the study of pitting corrosion of magnesium alloys
40. Study on the corrosion resistance of AZ91D magnesium alloy anodic oxide coating enhanced by sodium dodecyl benzene sulfonate
41. Rehman, Z.H., Kim, J.S., Churchill, D.G., and Koo, B.H. (2022). Tuning Corrosion Properties of the Bio-Inspired AZ-Series Mg Alloys Using Electrochemical Surface Treatment under Varying Experimental Regimes. Coatings, 12.10.3390/coatings12111617 ↗