Effect of KNbO3 content on the crystal structure and electrical properties of（1-x）PbZr0.54Ti0.46O3-xKNbO3 piezoelectric ceramics
来源期刊：International Journal of Minerals Metallurgy and Materials2013年第3期
论文作者：Lei Zhao Bo-ping Zhang Min Cui Yan Li
文章页码：279 - 283
摘 要：(1-x)PbZr0.54Ti0.46 O3-xKNbO3 （0 ≤ x ≤ 25mol%） （abbreviated as PZT-xKN） piezoelectric ceramics were successfully fabricated by a traditional sintering technique at 1225℃ for 30 min. The influence of KNbO3 content on the crystal structure and electrical properties of the PZT-xKN piezoelectric ceramics was studied. Samples with 0 ≤ x ≤ 0.20 show a pure perovskite structure, indicating that all KNbO3 diffused into the crystal lattice of PZT to form a single solid solution in this compositional range. A second Pb3Nb4O13 phase is observed in the PZT-0.25KN sample, showing that the maximum solid solubility of KNbO3 in PZT matrix ceramic is less than 25mol%. Compared with pure PZT piezoelectric ceramics, samples containing KNbO3 have smaller crystal grains. PZT-0.15KN exhibits excellent piezoelectric properties with d33 = 209 pC/N.
Lei Zhao，Bo-ping Zhang，Min Cui，Yan Li
School of Materials Science and Engineering, University of Science and Technology Beijing
摘 要：(1-x)PbZr0.54Ti0.46 O3-xKNbO3 （0 ≤ x ≤ 25mol%） （abbreviated as PZT-xKN） piezoelectric ceramics were successfully fabricated by a traditional sintering technique at 1225℃ for 30 min. The influence of KNbO3 content on the crystal structure and electrical properties of the PZT-xKN piezoelectric ceramics was studied. Samples with 0 ≤ x ≤ 0.20 show a pure perovskite structure, indicating that all KNbO3 diffused into the crystal lattice of PZT to form a single solid solution in this compositional range. A second Pb3Nb4O13 phase is observed in the PZT-0.25KN sample, showing that the maximum solid solubility of KNbO3 in PZT matrix ceramic is less than 25mol%. Compared with pure PZT piezoelectric ceramics, samples containing KNbO3 have smaller crystal grains. PZT-0.15KN exhibits excellent piezoelectric properties with d33 = 209 pC/N.
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