Growth of PEO ceramic coatings on AA 2024-T3 aluminium alloy
| Autor: | S Forero Sotomonte, C. E. Blanco Pinzon, S. J. García Vergara |
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| Rok vydání: | 2016 |
| Předmět: |
History
Aqueous solution Materials science Metallurgy technology industry and agriculture 02 engineering and technology Surface finish engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Computer Science Applications Education Amorphous solid Coating visual_art Conversion coating Aluminium alloy visual_art.visual_art_medium engineering Ceramic Composite material 0210 nano-technology Porosity |
| Zdroj: | Journal of Physics: Conference Series. 687:012037 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/687/1/012037 |
| Popis: | The growth of PEO ceramic coatings on AA 2024-T3 aluminium alloy in an aqueous Na2SiO3 (10.5g/l), KOH (2.8g/l) solution at 310 and 400V for 500 and 710s, was investigated. The morphology, roughness and thickness of the coatings were determined by SEM, digital microscopy, XRD diffraction analysis and thickness measuring instrument. The results show that thicker coatings are produced with longer process times and high applied voltages. Due to the nature of the PEO process, the roughness of the surface coatings increases as the coating become thicker, due to the development of sparks. The coatings are porous, with a crater like morphology and they are mainly amorphous. |
| Databáze: | OpenAIRE |
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