Abstract
The effects of additives on the properties of doped lead zirconia titanate (PZT) processed by low-temperature sintering were investigated using a statistical technique known as Taguchi method. A set of levels at different wt.% of the additives was selected and an experiment was conducted with an L 9 orthogonal array. The results revealed that the properties of doped PZT ceramics sintered at 1050 °C were strongly influenced by the additives. Microstructures of the doped PZT were affected with increasing content of MnO 2, Bi 4Ti 3O 12 and Ba 2TiSi 2O 8. The existence of second phases affected their properties. Densification, tetragonality and Curie temperature of the doped PZT were reduced with increasing contents of MnO 2 but k p and d 31 were relatively improved with 1 wt.% MnO 2 and Bi 4Ti 3O 12. Q m was strongly enhanced for higher doping of MnO 2. Addition of Ba 2TiSi 2O 8 has no significant effect on the properties.
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