Production of TiO2 coated α-Al2O3 platelets by flame spray pyrolysis and their characterization
| Autor: | Busra Gunhan, H. Bogac Poyraz, Guray Kaya, I. Ozgur Ozer |
|---|---|
| Přispěvatelé: | Kaya, Güray, Günhan, Büşra |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Scanning electron microscope chemistry.chemical_element 02 engineering and technology 01 natural sciences Methane Suspension (chemistry) Coating Plate-Like Alpha-Al2O3 chemistry.chemical_compound 0103 physical sciences Materials Chemistry TiO2 Spectroscopy Thermal spraying 010302 applied physics Process Chemistry and Technology 021001 nanoscience & nanotechnology Surfaces Coatings and Films Electronic Optical and Magnetic Materials Flame Spray Pyrolysis Chemical engineering chemistry Ceramics and Composites Particle size 0210 nano-technology Pyrolysis Titanium |
| Zdroj: | Ceramics International. 46:25512-25519 |
| ISSN: | 0272-8842 |
| Popis: | In this study, the applicability of the flame spray pyrolysis (FSP) method in the production of alpha-Al2O3 based TiO2 coatings was investigated. Plate-like alpha-Al2O3 particles, with a particle size of 8-30 mu m, were dispersed in a solution of titanium tetraisopropoxide-xylene, a low solids suspension was prepared, and then a TiO2 coating was obtained on alpha-Al2O3 platelets by feeding the precursor suspension into a pre-mixed methane/oxygen flame in a FSP reactor. Obtained coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX) methods. While the presence of heterogeneous nucleated TiO2 coating on alpha-Al2O3 platelet surfaces was revealed by the characterization process performed, it was also observed that homogeneously nucleated TiO2 nanoparticles were obtained during the process. |
| Databáze: | OpenAIRE |
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