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Meeting MS&T25: Materials Science & Technology
Symposium Advanced Coatings for Wear and Corrosion Protection
Presentation Title Enhancing Tribological and Corrosive Properties of AM60 and AZ91 Magnesium Alloys via PEO Surface Modification
Author(s) Paulo Soares, Tarciana Dieb Toscano, Bruno Leandro Pereira, Ricardo Diego Torres
On-Site Speaker (Planned) Paulo Soares
Abstract Scope Magnesium alloys, particularly AM60 and AZ91, are gaining traction in the aerospace industry due to their lightweight and superior strength-to-weight ratio. However, their application is limited by poor wear resistance and corrosion susceptibility. This study explores Plasma Electrolytic Oxidation (PEO) as a surface modification technique to enhance the tribological and corrosive properties of these alloys. Pulsed PEO was applied using distinct silicate-rich (AM60) and phosphate-rich (AZ91) electrolytes, varying voltage (300V, 350V) and time. SEM/EDS and XRD analyses showed a uniform porous magnesium oxide microstructure, reducing wear rates and friction coefficients post-PEO. Corrosion resistance (OCP/PP) was significantly improved for both alloys with PEO compared to the substrate. Notably, AM60 with PEO exhibited superior corrosion and wear resistance compared to AZ91. These findings highlight the potential of PEO-treated magnesium alloys for aerospace applications, offering enhanced durability. Applications include aircraft interior components, where high wear resistance is critical.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Anti-erosion coatings of silicon carbide and tantalum carbonitride nanocomposite by chemical vapor deposition
Cold-sprayed and arc-melted high-entropy alloys: wear, erosion and oxidation
Effect of chromium content on intermetallic growth and heat resistance in hot-dip aluminized ferritic stainless steels
Effects of Cu, Sn, and Mn additions on intermetallic layer growth in hot-dip aluminizing with Al-9Si bath
Enhanced wear resistance of AS41 magnesium alloy via plasma electrolytic oxidation
Enhancing Tribological and Corrosive Properties of AM60 and AZ91 Magnesium Alloys via PEO Surface Modification
Evolution of mechanical properties of PEO coated Mg rods.
Laser Cladding of CoCrCuFeNi and CoCrFeNi High-Entropy Alloys on DMR 249A Steel: Corrosion and Wear behavior
Modern corrosion and wear-resistant coatings obtained using FA-charges operating in aggressive conditions of industrial production
NbC Reinforced Ni Based Alloy Cladding by Thermal Spray Coatings and Weld Overlay Technique
Open-Air Plasma Assisted Organosilicon Coating on Automotive Aluminum Alloys for Corrosion Protection
Oxide thin films obtained by reactive sputtering for antifouling purposes
Tailored DLC Coating for Regolith Dust Mitigation
Tribocorrosion Performance of TiAlN and AlTiN Coatings on Ti6Al4V Alloy for Biomedical Applications
Understanding the role of particle size on thin coating formation and mechanical properties of WC-Co-Cr coatings deposited by HVAF spray

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