Growing Oriented Layers of Bi4Ti3O12 in Bi2O3/TiO2/SiO2/Nd2O3/Al2O3 Glass-Ceramics by Melt Quenching
| Autor: | Wolfgang Wisniewski, Stanislav S. Slavov, Christian Rüssel, Yanko Dimitriev |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Scanning electron microscope Analytical chemistry chemistry.chemical_element lcsh:Medicine 02 engineering and technology 01 natural sciences Aurivillius Phase (matter) 0103 physical sciences Graphite Ceramic lcsh:Science 010302 applied physics Multidisciplinary biology lcsh:R 021001 nanoscience & nanotechnology Microstructure biology.organism_classification Copper chemistry visual_art visual_art.visual_art_medium lcsh:Q 0210 nano-technology Electron backscatter diffraction |
| Zdroj: | Scientific Reports, Vol 8, Iss 1, Pp 1-12 (2018) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-018-26876-6 |
| Popis: | A glass melt with the composition 24Bi2O3/40TiO2/10SiO2/10Nd2O3/16 Al2O3 was prepared and rapidly quenched between two copper blocks (sample A). A part of this glass was subsequently crystallised at 800 °C for 8 h (sample B). For the preparation of another two samples, the melt was slowly cooled on a cooper plate (sample C) or cast into a graphite mould and subsequently thermally treated at 300 °C for 3 h (sample D). As shown by X-ray diffraction (XRD) and scanning electron microscopy (SEM) including energy dispersive X-ray spectroscopy (EDXS) and electron backscatter diffraction (EBSD) measurements, the rapidly cooled samples contained notable amounts of uncrystallised glassy phase next to the Aurivillius phase Bi4Ti3O12. The latter occurred in higher concentrations in all other samples and formed oriented layers. Minor concentrations of Bi2Al4O9 and Al2O3 were also detected in the microstructure. |
| Databáze: | OpenAIRE |
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