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Role of Si in the Anodizing Behavior of Al-Si Alloys: Additive Manufactured and Cast Al-Si10-Mg
- Source :
- Journal of The Electrochemical Society. 165:C532-C541
- Publication Year :
- 2018
- Publisher :
- The Electrochemical Society, 2018.
-
Abstract
- In this work, the role of the Si phase microstructure in the anodizing behavior of Al-Si alloys is studied. Experiments were conducted using an additive manufactured (AM) Al-Si10-Mg specimen and a cast alloy of approximately the same chemical composition. A systematic characterization of the anodic oxide film was conducted using a variety of surface analysis techniques. Clear evidence is provided through X-ray photoelectron spectroscopy analysis for the almost entire oxidation of Si during the anodizing of the additive manufactured specimens, which can explain the lower anodizing efficiency observed in the AM material compared to the cast alloy. Additionally, a more detailed characterization of the oxide layer revealed that a slightly thinner anodic oxide film is formed at the borders of the characteristic melting tracks resulting from the metal additive manufacturing process. Furthermore, the features observed in the voltage–time response during the anodizing of the AM specimens seem to be closely associated with the dimensions of the Al/Si cells present in the plane parallel to the direction of the oxide front growth.
- Subjects :
- Materials science
020209 energy
Alloy
Oxide
02 engineering and technology
engineering.material
Metal
chemistry.chemical_compound
X-ray photoelectron spectroscopy
Phase (matter)
0202 electrical engineering, electronic engineering, information engineering
Materials Chemistry
Electrochemistry
Composite material
Renewable Energy, Sustainability and the Environment
Anodizing
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry
visual_art
visual_art.visual_art_medium
engineering
0210 nano-technology
Layer (electronics)
Subjects
Details
- ISSN :
- 19457111 and 00134651
- Volume :
- 165
- Database :
- OpenAIRE
- Journal :
- Journal of The Electrochemical Society
- Accession number :
- edsair.doi.dedup.....12bdfda519088ca260e142b12b4b1503
- Full Text :
- https://doi.org/10.1149/2.1301809jes