About this Abstract |
| 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. |