Sinterbility of (Bi<inf>1-x</inf>La<inf>x</inf>Ti<inf>3</inf>O<inf>12</inf> ceramics
This research studied the effects of sintering temperature and La 3+ doping content on phase, microstructure and densification of bismuth lanthanum titanate (Bi4-xLaxTi3O 12; BLT) ceramics when x = 0, 0.25, 0.5, 0.75 and 1.0, respectively. The BLT powders were prepared using a mixed-oxide method. Th...
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| Main Authors: | , , |
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| Format: | Book Series |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=62949220241&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/60349 |
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| Institution: | Chiang Mai University |
| Summary: | This research studied the effects of sintering temperature and La 3+ doping content on phase, microstructure and densification of bismuth lanthanum titanate (Bi4-xLaxTi3O 12; BLT) ceramics when x = 0, 0.25, 0.5, 0.75 and 1.0, respectively. The BLT powders were prepared using a mixed-oxide method. The mixtures were calcined at 750°C for 4 h before being pressed and sintered at 1000-1150°C for 4 h. The result of phase analysis by X-ray diffraction (XRD) indicated the existence of orthorhombic phase for all sintering temperatures. The XRD peak intensities of the ceramics showed preferred orientation of a particular set of {001}-type planes. The ceramics mainly composed of plate-like grains. Increasing the sintering temperature increased grain size and increased preferred grain orientation. The present of La3+ in BLT ceramics reduced preferred orientation especially at higher sintering temperature. Results of microstructural investigation agreed well with X-ray diffraction patterns. © 2008 Trans Tech Publications, Switzerland. |
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