Surface Modification by Plasma Electrolytic Oxidation of Friction Surfacing 4043 Aluminum-Based Alloys Deposited onto Structural S235 Steel Substrate
Roxana Muntean, Ion-Dragoș Uțu
TL;DR
This study explores how plasma electrolytic oxidation improves the wear and corrosion resistance of aluminum coatings deposited on steel using friction surfacing.
Contribution
The novelty lies in combining friction surfacing with plasma electrolytic oxidation to enhance surface properties of aluminum coatings on steel.
Findings
PEO treatment significantly reduced the corrosion rates of aluminum-based coatings.
Wear rates of PEO-modified coatings were much lower than untreated coatings and steel substrates.
The PEO process formed a ceramic film that improved hardness and chemical stability.
Abstract
The friction surfacing (FS) process has emerged over the past few years as a method for joining both similar and dissimilar materials, for volume damage repair of defective components, and for corrosion protection. The possibility to produce a metallic coating by FS, without melting the material, classifies this technique as distinct from other standard methods. This unconventional deposition method is based on the severe plastic deformation that appears on a rotating metallic rod (consumable material) pressed against the substrate under an axial load. The present study aims to investigate the tribological properties and corrosion resistance provided by the aluminum-based FS coatings deposited onto a structural S235 steel substrate and further modified by plasma electrolytic oxidation (PEO). During the PEO treatment, the formation of a ceramic film is enabled, while the hardness,…
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Taxonomy
TopicsMagnesium Alloys: Properties and Applications · Aluminum Alloys Composites Properties · High Entropy Alloys Studies