A self-sealing and self-healing MAO corrosion-resistant coating on aluminum alloy by in situ growth of CePO4/Al2O3

Chao Yang; Zongmin Sun; Chenyu Wang; Aihui Huang; Zishuo Ye; Tao Ying; Liping Zhou; Shu Xiao; Paul K. Chu; Xiaoqin Zeng

doi:10.1016/j.corsci.2025.112706

Author(s)

Chao Yang
Zongmin Sun
Chenyu Wang
Aihui Huang
Zishuo Ye
Tao Ying
Liping Zhou
Shu Xiao
Xiaoqin Zeng

Related Research Unit(s)

Detail(s)

Original language	English
Article number	112706
Journal / Publication	Corrosion Science
Volume	245
Online published	13 Jan 2025
Publication status	Published - 1 Apr 2025

Link(s)

DOI	DOI https://doi.org/10.1016/j.corsci.2025.112706 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85215082771&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(24b68520-6578-4f8e-ab55-9b13c3dfb93a).html

Abstract

A coating with self-sealing and self-healing properties is prepared on the LY12 aluminum alloy by microarc oxidation (MAO). The in situ growth of CePO₄ and Al₂O₃ creates a mixed melt that fills the discharge pores, while the mixed amorphous and nanocrystalline structure enhances the corrosion resistance. Electrochemical and saltwater immersion tests demonstrate that the Ce-doped MAO coating has excellent corrosion resistance without local pitting corrosion after immersion for 336 h. During immersion, CePO₄ releases Ce^{3 +} to form Ce(OH)₃ to fill the loose corrosion product Al(OH)₃, consequently creating a denser product film with self-sealing and self-healing capabilities. © 2025 Elsevier Ltd

Research Area(s)

Aluminum alloy, Cerium phosphate, Corrosion resistance, Micro arc oxidation (MAO), Self-healing, Self-sealing

Citation Format(s)

[ RIS ] [ BibTeX ]

A self-sealing and self-healing MAO corrosion-resistant coating on aluminum alloy by in situ growth of CePO₄/Al₂O₃. / Yang, Chao; Sun, Zongmin; Wang, Chenyu et al.
In: Corrosion Science, Vol. 245, 112706, 01.04.2025.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Yang, C, Sun, Z, Wang, C, Huang, A, Ye, Z, Ying, T, Zhou, L, Xiao, S, Chu, PK & Zeng, X 2025, 'A self-sealing and self-healing MAO corrosion-resistant coating on aluminum alloy by in situ growth of CePO₄/Al₂O₃', Corrosion Science, vol. 245, 112706. https://doi.org/10.1016/j.corsci.2025.112706

Yang, C., Sun, Z., Wang, C., Huang, A., Ye, Z., Ying, T., Zhou, L., Xiao, S., Chu, P. K., & Zeng, X. (2025). A self-sealing and self-healing MAO corrosion-resistant coating on aluminum alloy by in situ growth of CePO₄/Al₂O₃. Corrosion Science, 245, Article 112706. https://doi.org/10.1016/j.corsci.2025.112706

Yang C, Sun Z, Wang C, Huang A, Ye Z, Ying T et al. A self-sealing and self-healing MAO corrosion-resistant coating on aluminum alloy by in situ growth of CePO₄/Al₂O₃. Corrosion Science. 2025 Apr 1;245:112706. Epub 2025 Jan 13. doi: 10.1016/j.corsci.2025.112706

Yang, Chao ; Sun, Zongmin ; Wang, Chenyu et al. / A self-sealing and self-healing MAO corrosion-resistant coating on aluminum alloy by in situ growth of CePO₄/Al₂O₃. In: Corrosion Science. 2025 ; Vol. 245.