Mechanism of microarc oxidation on AZ91D Mg alloy induced by β-Mg17Al12 phase

Dajun Zhai; Xiaoping Li; Jun Shen

doi:10.1007/s12613-023-2752-0

Volume 31 Issue 4

Apr. 2024

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2024 > 31(4): 712-724

Dajun Zhai, Xiaoping Li, and Jun Shen, Mechanism of microarc oxidation on AZ91D Mg alloy induced by β-Mg₁₇Al₁₂ phase, Int. J. Miner. Metall. Mater., 31(2024), No. 4, pp. 712-724. https://doi.org/10.1007/s12613-023-2752-0

Cite this article as:

Dajun Zhai, Xiaoping Li, and Jun Shen, Mechanism of microarc oxidation on AZ91D Mg alloy induced by β-Mg17Al12 phase, Int. J. Miner. Metall. Mater., 31(2024), No. 4, pp. 712-724. https://doi.org/10.1007/s12613-023-2752-0

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Research Article

Mechanism of microarc oxidation on AZ91D Mg alloy induced by β-Mg₁₇Al₁₂ phase

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Corresponding author:
Jun Shen E-mail: shenjun@cqu.edu.cn
Received: 10 May 2023; Revised: 6 September 2023; Accepted: 25 September 2023; Available online: 28 September 2023

Abstract

Abstract

This work proposed a strategy of indirectly inducing uniform microarc discharge by controlling the content and distribution of β-Mg₁₇Al₁₂ phase in AZ91D Mg alloy. Two kinds of nano-particles (ZrO₂ and TiO₂) were designed to be added into the substrate of Mg alloy by friction stir processing (FSP). Then, Mg alloy sample designed with different precipitated morphology of β-Mg₁₇Al₁₂ phase was treated by microarc oxidation (MAO) in Na₃PO₄/Na₂SiO₃ electrolyte. The characteristics and performance of the MAO coating was analyzed using scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), contact angle meter, and potentiodynamic polarization. It was found that the coarse α-Mg grains in extruded AZ91D Mg alloy were refined by FSP, and the β-Mg₁₇Al₁₂ phase with reticular structure was broken and dispersed. The nano-ZrO₂ particles were pinned at the grain boundary by FSP, which refined the α-Mg grain and promoted the precipitation of β-Mg₁₇Al₁₂ phase in grains. It effectively inhibited the “cascade” phenomenon of microarcs, which induced the uniform distribution of discharge pores. The MAO coating on Zr-FSP sample had good wettability and corrosion resistance. However, TiO₂ particles were hardly detected in the coating on Ti-FSP sample.
- AZ91D Mg alloy;
- microarc oxidation;
- friction stir processing;
- ZrO₂;
- TiO₂;
- β-Mg₁₇Al₁₂

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References

[1]	A.A. Hegy, R. Smith, E.R. Gauthier, and J.E. Gray-Munro, Investigation of a cyanine dye assay for the evaluation of the biocompatibility of magnesium alloys by direct and indirect methods, Bioact. Mater., 5(2020), No. 1, p. 26.
[2]	H.W. Chen, B. Yuan, R. Zhao, et al., Evaluation on the corrosion resistance, antibacterial property and osteogenic activity of biodegradable Mg–Ca and Mg–Ca–Zn–Ag alloys, J. Magnesium Alloys, 10(2022), No. 12, p. 3380. doi: 10.1016/j.jma.2021.05.013
[3]	S.S. Park, U. Farwa, I. Park, B.G. Moon, S.B. Im, and B.T. Lee, In-vivo bone remodeling potential of Sr–d-Ca–P/PLLA-HAp coated biodegradable ZK60 alloy bone plate, Mater. Today Bio, 18(2023), art. No. 100533. doi: 10.1016/j.mtbio.2022.100533
[4]	W.H. Yao, L. Wu, J.F. Wang, et al., Micro-arc oxidation of magnesium alloys: A review, J. Mater. Sci. Technol., 118(2022), p. 158. doi: 10.1016/j.jmst.2021.11.053
[5]	A. Fattah-alhosseini, R. Chaharmahali, K. Babaei, M. Nouri, M.K. Keshavarz, and M. Kaseem, A review of effective strides in amelioration of the biocompatibility of PEO coatings on Mg alloys, J. Magnesium Alloys, 10(2022), No. 9, p. 2354. doi: 10.1016/j.jma.2022.09.002
[6]	D.D. Wang, X.T. Liu, Y. Wang, et al., Role of the electrolyte composition in establishing plasma discharges and coating growth process during a micro-arc oxidation, Surf. Coat. Technol., 402(2020), art. No. 126349. doi: 10.1016/j.surfcoat.2020.126349
[7]	X.N. Ly, S. Yang, and T. Nguyen, Effect of equal channel angular pressing as the pretreatment on microstructure and corrosion behavior of micro-arc oxidation (MAO) composite coating on biodegradable Mg–Zn–Ca alloy, Surf. Coat. Technol., 395(2020), art. No. 125923. doi: 10.1016/j.surfcoat.2020.125923
[8]	T. Mi, B. Jiang, Z. Liu, et al., Self-organization kinetics of microarc oxidation: Nonequilibrium-state electrode reaction kinetics, J. Electrochem. Soc., 163(2016), No. 5, p. C184. doi: 10.1149/2.0631605jes
[9]	L. Casanova, M. Arosio, M.T. Hashemi, M. Pedeferri, G.A. Botton, and M. Ormellese, A nanoscale investigation on the influence of anodization parameters during plasma electrolytic oxidation of titanium by high-resolution electron energy loss spectroscopy, Appl. Surf. Sci., 570(2021), art. No. 151133. doi: 10.1016/j.apsusc.2021.151133
[10]	D.S. Tsai and C.C. Chou, Influences of growth species and inclusions on the current–voltage behavior of plasma electrolytic oxidation: A review, Coatings, 11(2021), No. 3, art. No. 270. doi: 10.3390/coatings11030270
[11]	C.C. Liu, T. Xu, Q.Y. Shao, et al., Effects of beta phase on the growth behavior of plasma electrolytic oxidation coating formed on magnesium alloys, J. Alloys Compd., 784(2019), p. 414. doi: 10.1016/j.jallcom.2019.01.095
[12]	Y.N. Xue, X. Pang, B.L. Jiang, H. Jahed, and D. Wang, Characterization of the corrosion performances of as-cast Mg–Al and Mg–Zn magnesium alloys with microarc oxidation coatings, Mater. Corros., 71(2020), No. 6, p. 992. doi: 10.1002/maco.201911384
[13]	E.Y. Liu, Y.F. Niu, S.R. Yu, et al., Micro-arc oxidation behavior of fly ash cenospheres/magnesium alloy degradable composite and corrosion resistance of coatings, Surf. Coat. Technol., 391(2020), art. No. 125693. doi: 10.1016/j.surfcoat.2020.125693
[14]	Y.Q. Wang, X.J. Wang, T. Zhang, K. Wu, and F.H. Wang, Role of β phase during microarc oxidation of Mg alloy AZ91D and corrosion resistance of the oxidation coating, J. Mater. Sci. Technol., 29(2013), No. 12, p. 1129. doi: 10.1016/j.jmst.2013.10.014
[15]	Y. Chen, Y.G. Yang, W. Zhang, T. Zhang, and F.H. Wang, Influence of second phase on corrosion performance and formation mechanism of PEO coating on AZ91 Mg alloy, J. Alloys Compd., 718(2017), p. 92. doi: 10.1016/j.jallcom.2017.05.010
[16]	R.S. Mishra, M.W. Mahoney, S.X. McFadden, N.A. Mara, and A.K. Mukherjee, High strain rate superplasticity in a friction stir processed 7075 Al alloy, Scr. Mater., 42(1999), No. 2, p. 163 doi: 10.1016/S1359-6462(99)00329-2
[17]	A. Maqbool, N.Z. Khan, A.N. Siddiquee, I.A. Badruddin, M. Hussien, and M.I. Khan, Overcoming challenges in using magnesium-based materials for industrial applications using friction-stir engineering, Mater. Sci. Technol., 39(2023), No. 9, p. 1039. doi: 10.1080/02670836.2022.2158539
[18]	A.R. Eivani, M. Mehdizade, S. Chabok, and J. Zhou, Applying multi-pass friction stir processing to refine the microstructure and enhance the strength, ductility and corrosion resistance of WE43 magnesium alloy, J. Mater. Res. Technol., 12(2021), p. 1946. doi: 10.1016/j.jmrt.2021.03.021
[19]	T.S. Kumar, S. Shalini, and T. Thankachan, Friction stir processing based surface modification of AZ31 magnesium alloy, Mater. Manuf. Process., 38(2023), No. 11, p. 1426. doi: 10.1080/10426914.2023.2165670
[20]	M.A. Khan, R. Butola, and N. Gupta, A review of nanoparticle reinforced surface composites processed by friction stir processing, J. Adhes. Sci. Technol., 37(2023), No. 4, p. 565. doi: 10.1080/01694243.2022.2037054
[21]	T. Qiu, L.M. Tan, D.J. Zhai, P. Ni, and J. Shen, Correlation between plasma electrolytic oxidation coating on Ti₆Al₄V alloy and cathode current, Metall. Mater. Trans. A, 54(2023), No. 1, p. 333. doi: 10.1007/s11661-022-06883-z
[22]	X.M. Wang and F.Q. Zhang, Influence of anions in phosphate and tetraborate electrolytes on growth kinetics of microarc oxidation coatings on Ti₆Al₄V alloy, Trans. Nonferrous Met. Soc. China, 32(2022), No. 7, p. 2243. doi: 10.1016/S1003-6326(22)65944-2
[23]	G. Mortazavi, J.C. Jiang, and E.I. Meletis, Investigation of the plasma electrolytic oxidation mechanism of titanium, Appl. Surf. Sci., 488(2019), p. 370. doi: 10.1016/j.apsusc.2019.05.250
[24]	Y.S. Yi, Y. Meng, D.Q. Li, S. Sugiyama, and J. Yanagimoto, Partial melting behavior and thixoforming properties of extruded magnesium alloy AZ91 with and without addition of SiC particles with a volume fraction of 15%, J. Mater. Sci. Technol., 34(2018), No. 7, p. 1149. doi: 10.1016/j.jmst.2017.11.044
[25]	J. Gao, S. Jiang, H. Zhang, et al., Facile route to bulk ultrafine-grain steels for high strength and ductility, Nature, 590(2021), No. 7845, p. 262. doi: 10.1038/s41586-021-03246-3
[26]	Y. Wang, B.W. Yang, M.Q. Gao, E.T. Zhao, and R.G. Guan, Microstructure evolution, mechanical property response and strengthening mechanism induced by compositional effects in Al–6Mg alloys, Mater. Des., 220(2022), art. No. 110849. doi: 10.1016/j.matdes.2022.110849
[27]	S. Fatimah, H.W. Yang, M.P. Kamil, and Y.G. Ko, Control of surface plasma discharge considering the crystalline size of Al substrate, Appl. Surf. Sci., 477(2019), p. 60. doi: 10.1016/j.apsusc.2017.12.208
[28]	G.B. Darband, M. Aliofkhazraei, P. Hamghalam, and N. Valizade, Plasma electrolytic oxidation of magnesium and its alloys: Mechanism, properties and applications, J. Magnesium Alloys, 5(2017), No. 1, p. 74. doi: 10.1016/j.jma.2017.02.004
[29]	D.J. Zhai, T. Qiu, J. Shen, and K.Q. Feng, Mechanism of tetraborate and silicate ions on the growth kinetics of microarc oxidation coating on a Ti₆Al₄V alloy, RSC Adv., 13(2023), No. 8, p. 5382. doi: 10.1039/D2RA07755H
[30]	D.J. Zhai, K.Q. Feng, and H.F. Yue, Growth kinetics of microarc oxidation TiO₂ ceramic film on Ti₆Al₄V alloy in tetraborate electrolyte, Metall. Mater. Trans. A, 50(2019), No. 5, p. 2507. doi: 10.1007/s11661-019-05185-1
[31]	T. Wu, C. Blawert, M. Serdechnova, et al., PEO processing of AZ91Nd/Al₂O₃ MMC-the role of alumina fibers, J. Magnesium Alloys, 10(2022), No. 2, p. 423. doi: 10.1016/j.jma.2021.09.017
[32]	J.W. Lin, S.Q. He, X.X. Wang, H.H. Zhang, and Y.H. Zhan, Removal of phosphate from aqueous solution by a novel Mg(OH)₂/ZrO₂ composite: Adsorption behavior and mechanism, Colloids Surf. A, 561(2019), p. 301. doi: 10.1016/j.colsurfa.2018.11.001
[33]	S.K. Yang, C. Wang, F.Z. Li, et al., One-step in situ growth of a simple and efficient pore-sealing coating on micro-arc oxidized AZ31B magnesium alloy, J. Alloys Compd., 909(2022), art. No. 164710. doi: 10.1016/j.jallcom.2022.164710
[34]	L. Liu, S.R. Yu, G. Zhu, et al., Corrosion and wear resistance of micro-arc oxidation coating on glass microsphere reinforced Mg alloy composite, J. Mater. Sci., 56(2021), No. 27, p. 15379. doi: 10.1007/s10853-021-06252-y
[35]	M. Stern, Electrochemical polarization, J. Electrochem. Soc., 104(1957), No. 9, art. No. 559. doi: 10.1149/1.2428653
[36]	G.L. Song, A. Atrens, X.L. Wu, and B. Zhang, Corrosion behaviour of AZ21, AZ501 and AZ91 in sodium chloride, Corros. Sci., 40(1998), No. 10, p. 1769. doi: 10.1016/S0010-938X(98)00078-X
[37]	C.H. Shih, C.Y. Huang, T.H. Hsiao, and C.S. Lin, The effect of the secondary phases on the corrosion of AZ31B and WE43–T5 Mg alloys, Corros. Sci., 211(2023), art. No. 110920. doi: 10.1016/j.corsci.2022.110920
[38]	J. Muldoon, C.B. Bucur, and T. Gregory, Fervent hype behind magnesium batteries: An open call to synthetic chemists—Electrolytes and cathodes needed, Angew. Chem. Int. Ed., 56(2017), No. 40, p. 12064. doi: 10.1002/anie.201700673
[39]	S.W. Guan, M. Qi, Y.D. Li, and W.Q. Wang, Morphology evolution of the porous coatings on Ti– xAl alloys by Al adding into Ti during micro-arc oxidation in Na₂B₄O₇ electrolyte, Surf. Coat. Technol., 395(2020), art. No. 125948.