| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thin Films and Coatings: Properties, Processing and Applications
|
| Presentation Title |
Deposition and Corrosion Resistivity of a Novel Multilayer PEO-HEA Coating on Mg Alloy |
| Author(s) |
Soheil Saedi, Hatim Raji, Hamdy Ibrahim |
| On-Site Speaker (Planned) |
Hatim Raji |
| Abstract Scope |
Lightweight magnesium alloys, with impressive strength-to-weight ratios and recyclability, have exceptional potential to be employed in various industries. However, the primary concern regarding their application is low corrosion resistance. Recently, high-entropy alloys (HEAs) have attracted attention as highly promising coating materials due to their high hardness and slow diffusion kinetics. Despite this, applying HEA coatings on magnesium substrates poses significant challenges due to the low melting point of magnesium. To address these challenges, this work investigated a multilayer coating approach. The HEA coating layer was successfully deposited as a secondary layer on a plasma electrolytic oxidation (PEO)-coated magnesium alloy. The results highlighted the impact of the initial PEO coating in minimizing damage and protecting the magnesium substrate from heat damage caused by plasma spray coating. The PEO-HEA composite coating also exhibited significantly improved corrosion characteristics, as demonstrated by its lowest corrosion potential and current. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, High-Entropy Alloys, Process Technology |