| La2O3、Y2O3掺杂对(Na0.5Bi0.5)0.94Ba0.06TiO3无铅压电陶瓷性能的影响 |
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| 引用本文： | 韦瑶,李珍.La2O3、Y2O3掺杂对(Na0.5Bi0.5)0.94Ba0.06TiO3无铅压电陶瓷性能的影响[J].材料开发与应用,2008,23(4). |
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| 作者姓名： | 韦瑶 李珍 |
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| 作者单位： | 中国地质大学材料科学与化学工程学院,湖北武汉,430074;中国地质大学材料科学与化学工程学院,湖北武汉,430074 |
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| 摘 要： | 以(Na0.5Bi0.5)0.94Ba0.06TiO3为基体,研究了单、双组分掺杂La2O3、Y2O3对BNBT6陶瓷的压电和介电性能及微观结构的影响。XRD分析表明:掺杂La2O3、Y2O3均得到钙钛矿结构。SEM分析表明,分别掺杂0.2%La2O3和0.2%Y2O3使得陶瓷晶粒增大,压电常数提高,双组分掺杂La2O3、Y2O3在掺杂量0.12%La2O3+0.08%Y2O3时,压电常数d33增大到最大值144.6×10-12C/N,介质损耗降低到最小值0.039。
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| 关 键 词： | BNBT6元铅压电陶瓷 掺杂 La2O3 Y2O3 压电常数 |
Effect of Doping La2O3 and Y2O3 on Properties of(Na0.5Bi0.5)0.94Ba0.06TiO3 Lead-free Ceramics |
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| WEI Yao,LI Zhen.Effect of Doping La2O3 and Y2O3 on Properties of(Na0.5Bi0.5)0.94Ba0.06TiO3 Lead-free Ceramics[J].Development and Application of Materials,2008,23(4). |
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| Authors: | WEI Yao LI Zhen |
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| Abstract: | Effect of doping La2O3 and Y2O3 on dielectric and piezoelectricity properties of(Na0.5Bi0.5)0.94Ba0.06TiO3 lead-free ceramics was investigated.X-ray diffraction analysis shows that doped La2O3 and Y2O3 exhibit single-phase perovskite structure.SEM observation suggests that when 0.2%La2O3 and 0.2%Y2O3 is added,the crystal grain is accreted and piezoelectric constant is advanced.When 0.12%La2O3 and 0.08%Y2O3 is added,piezoelectric constants(d33) reaches the maximum value of 144.6×10-12C/N and dielectric loss reaches the minimum value of 0.039. |
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| Keywords: | La2O3 Y2O3 |
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