Abstract
Zinc titanate ceramics were prepared by the conventional mixed-oxide method combined with chemical processing. The influences of raw materials and the addition of V2O5 and WO3 on the phase stability, microstructures and low-temperature sintering behavior of ZnTiO3 ceramics were investigated; low-temperature sintering mechanism and phase transition mechanism of zinc titanate ceramics with V2O5 and WO3 addition was discussed. The results show that the low-temperature sintering of ceramics was very sensitive to differences in raw materials, especially for TiO2. The densification temperature of ZnTiO3 ceramics was reduced to 900°C with increasing V2O5 and WO3 addition. Also the phase transition temperature from hexagonal ZnTiO3 phase to cubic Zn2TiO4 was lowered by adding V2O5 and WO3. The low-temperature sintering mechanism of V2O5-doped zinc titanate ceramics was a liquid phase sintering mechanism, while low-temperature sintering of V2O5-doped zinc titanate ceramics can be attributed to a solid phase reactive sintering mechanism. The phase decomposition and the second phase degraded the dielectric properties of V2O5 and WO3 doped ceramics.
Original language | English |
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Pages (from-to) | 1000-1005 |
Number of pages | 6 |
Journal | Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society |
Volume | 34 |
Issue number | 8 |
State | Published - Aug 2006 |
Keywords
- Chemical processing
- Liquid phase sintering
- Low-temperature sintering
- Phase transition
- Zinc titanate