Preparation and Characterization of Oxide Coatings with LDH Nanosheets on AZ91 Magnesium Alloy by a One-Step Low Voltage Microarc Oxidation Process.

Longfeng Shi, Xuchen Lu, Peixuan Li, Cancan Liu, Jun Liang

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Article in Materials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 authors.

Longfeng ShiCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.ORCID 0009-0008-5442-0701

Xuchen LuCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.

Peixuan LiResearch Institute of Interdisciplinary Science, School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China.

Cancan LiuCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.

Jun LiangResearch Institute of Interdisciplinary Science, School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China.ORCID 0000-0001-8328-5168

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In this study, oxide coatings with layered double hydroxide (LDH) nanosheets were prepared on AZ91 magnesium alloy by a one-step low-voltage microarc oxidation (MAO) process. The microstructure and composition of the coatings were characterized using SEM, EDS, XRD, FT-IR, and XPS. The corrosion protection performance of the coatings was evaluated by electrochemical analysis and hydrogen evolution tests. The results showed that oxide coatings with Mg-Al-LDH nanosheets are successfully produced by microarc oxidation at a voltage of less than 100 V. The coating with a higher density of Mg-Al LDH nanosheets exhibited enhanced corrosion resistance. Moreover, after modification with stearic acid, the coatings displayed high hydrophobicity and corrosion resistance.

Indexed as

corrosion resistanceLDH nanosheetslow voltage microarc oxidationmagnesium alloy

Identifiers

PMID41597928

DOI10.3390/ma19020216

PMCPMC12842790

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