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Article

The Influence of PEO Process Parameters on the Mechanical and Sclerometric Properties of Coatings on the Ultralight Magnesium Alloy LA141

1
Institute of Materials Engineering, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland
2
Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland
*
Author to whom correspondence should be addressed.
Coatings 2025, 15(8), 961; https://doi.org/10.3390/coatings15080961 (registering DOI)
Submission received: 25 July 2025 / Revised: 12 August 2025 / Accepted: 16 August 2025 / Published: 18 August 2025
(This article belongs to the Section Corrosion, Wear and Erosion)

Abstract

This study explores the influence of significant manufacturing parameters, i.e., peak current density and frequency, on the oxide coatings’ micromechanical and sclerometric properties. The parameter levels were determined using a full experimental design with two variables at three levels. Plasma electrolytic oxidation (PEO) was conducted on an ultralight LA141 magnesium alloy in an alkaline ternary electrolyte. Coating performance was characterized by measuring hardness (HIT) and Young’s modulus (EIT), as well as three loads significant to coating failure: Lc1, the initiation of Hertzian tensile cracks; Lc2, the initiation of cohesive coating failure; and Lc3, full delamination of the coating. Scratch testing was complemented by profilographic analysis to provide isometric surface images. Statistical analysis was then employed to ascertain correlations of process parameters with the developed mechanical and sclerometric properties.
Keywords: ultralight magnesium alloy; plasma electrolytic oxidation; mechanical properties; sclerometric properties ultralight magnesium alloy; plasma electrolytic oxidation; mechanical properties; sclerometric properties

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MDPI and ACS Style

Niedźwiedź, M.; Korzekwa, J.; Bara, M.; Kaptacz, S.; Aniołek, K.; Sowa, M.; Simka, W. The Influence of PEO Process Parameters on the Mechanical and Sclerometric Properties of Coatings on the Ultralight Magnesium Alloy LA141. Coatings 2025, 15, 961. https://doi.org/10.3390/coatings15080961

AMA Style

Niedźwiedź M, Korzekwa J, Bara M, Kaptacz S, Aniołek K, Sowa M, Simka W. The Influence of PEO Process Parameters on the Mechanical and Sclerometric Properties of Coatings on the Ultralight Magnesium Alloy LA141. Coatings. 2025; 15(8):961. https://doi.org/10.3390/coatings15080961

Chicago/Turabian Style

Niedźwiedź, Mateusz, Joanna Korzekwa, Marek Bara, Sławomir Kaptacz, Krzysztof Aniołek, Maciej Sowa, and Wojciech Simka. 2025. "The Influence of PEO Process Parameters on the Mechanical and Sclerometric Properties of Coatings on the Ultralight Magnesium Alloy LA141" Coatings 15, no. 8: 961. https://doi.org/10.3390/coatings15080961

APA Style

Niedźwiedź, M., Korzekwa, J., Bara, M., Kaptacz, S., Aniołek, K., Sowa, M., & Simka, W. (2025). The Influence of PEO Process Parameters on the Mechanical and Sclerometric Properties of Coatings on the Ultralight Magnesium Alloy LA141. Coatings, 15(8), 961. https://doi.org/10.3390/coatings15080961

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