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Investigation of plasma electrolytic oxidation coating formed on two Al–Si–Mg alloys via advanced X-ray computed tomography.
- Source :
-
Journal of Materials Science . Oct2023, Vol. 58 Issue 40, p15861-15883. 23p. 2 Color Photographs, 4 Black and White Photographs, 1 Diagram, 5 Charts, 9 Graphs. - Publication Year :
- 2023
-
Abstract
- In this work, the influence of Si concentration on the microstructure and growth of plasma electrolytic oxidation (PEO) coatings on two types of Al–Si–Mg aluminum alloys were investigated. we utilized a multiscale correlative methodology to analyze the microstructure and micro-defect characteristics of the PEO coatings formed on A357 and 6082 aluminum alloys. The results demonstrate that both coatings exhibit a porous structure and are primarily composed of alumina and amorphous phases. Notably, the PEO coating formed on A357 alloy exhibits lower thickness, higher porosity, and more non-uniform barrier layer compared to that on 6082 alloy due to a higher concentration of Si in the substrate. Advanced X-ray computed tomography effectively characterizes micro-defects with different morphologies within the two coatings. Through microstructural observation and micro-defect characterization, we elucidate the influence of Si on the coating growth. [ABSTRACT FROM AUTHOR]
- Subjects :
- *COMPUTED tomography
*ELECTROLYTIC oxidation
*SURFACE coatings
*X-rays
Subjects
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 58
- Issue :
- 40
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 173396399
- Full Text :
- https://doi.org/10.1007/s10853-023-08983-6