Single step combustion synthesis for the preparation of bismuth titanate ceramics for potential applications
Bismuth titanate was systematically prepared by a single step combustion synthesis. Based on TG-DTA, the corresponding phase was completely obtained below 300oC, resulting in highly exothermic peak at 236oC. The formation of a single crystalline structure of Bi-layered with different degree of cr...
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| Main Authors: | , , , |
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| 格式: | Article |
| 语言: | English |
| 出版: |
Trans Tech Publications, Switzerland
2013
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| 主题: | |
| 在线阅读: | http://eprints.utem.edu.my/id/eprint/9749/1/AMR_620.2012.jpg http://eprints.utem.edu.my/id/eprint/9749/ http://www.scientific.net/AMR.620.429 |
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| 总结: | Bismuth titanate was systematically prepared by a single step combustion synthesis.
Based on TG-DTA, the corresponding phase was completely obtained below 300oC, resulting in
highly exothermic peak at 236oC. The formation of a single crystalline structure of Bi-layered with
different degree of crystallinity was strongly affected by hydrolysis temperature. Goodness-of-fit
indicator, S for entire samples was in the range of 1.55 – 1.94, which is acceptable for Rietveld
refinement analysis. All Raman peaks became more intense and sharp with higher hydrolysis
temperature, suggesting that the strong interactions between Ti-O bonding in BIT structure. The
presence of peaks at 838 and 628 cm-1 in the IR spectrum can be ascribed to the stretching
vibrations of Bi-O and Ti-O, respectively. Besides, the obtained powders are very fine with minimal
grain growth, resulting in agglomerated powders. |
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