| 铌酸钠钾基压电陶瓷的结构与性能研究 |
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| 引用本文： | 周云,蒋魁强,王珊珊,王军辉.铌酸钠钾基压电陶瓷的结构与性能研究[J].中国计量学院学报,2009,20(1):89-91,96. |
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| 作者姓名： | 周云 蒋魁强 王珊珊 王军辉 |
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| 作者单位： | 中国计量学院理学院,浙江,杭州,310018 |
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| 摘 要： | 采用传统的固相反应合成法制备了结构较为致密的0.9(K0.5Na0.5)NbO3-0.1LiSbO3(KNN-LS)无铅压电陶瓷,研究了其相结构、压电、介电、损耗以及铁电性质.常温下的压电陶瓷具备四方钙钛矿结构,具有较高的压电系数d33=131pC/N和低的介电损耗tanδ=0.09(10kHz)等优点.另外,常温下的KNN-LS陶瓷存在着较为饱满的电滞回线,其剩余极化率Pr为16.1μC/cm2,矫顽场为EC=14.8kV/cm.性能较KNN压电陶瓷有了较大的提高.
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| 关 键 词： | 无铅压电陶瓷 压电性能 介电性能 铁电性能 |
A study on the preparation and properties of 0.9(K0.5 Na0.5)NbO3-0.1 LiSbO3 lead-free p iezoelectric ceramics |
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| ZHOU Yun,JIANG Kui-qiang,WANG Shan-shan,WANG Jun-hui.A study on the preparation and properties of 0.9(K0.5 Na0.5)NbO3-0.1 LiSbO3 lead-free p iezoelectric ceramics[J].Journal of China Jiliang University,2009,20(1):89-91,96. |
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| Authors: | ZHOU Yun JIANG Kui-qiang WANG Shan-shan WANG Jun-hui |
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| Affiliation: | (College of Sciences, China Jiliang University, Hangzhou 310018, China) |
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| Abstract: | Lead-free piezoelectric ceramics, with the nominal composition of 0.9 （K0.5 Na0.5）- NbO3 -0.1LiSbO3, were synthesized by conventional solid state sintering. The phase structure, piezoelectric, dielectric constant, the loss tangent and ferroeleetric properties were characterized. The ceramics are single perovskite phase with tetragonal structure. High piezoelectric constant （d33=131 pC/N） and low dielectric loss tanδ=0. 09 （10 kHz） can be obtained from the ceramics. Typical ferroelectric polarization hysteresis loops can be obtained from the ceramics with the remnant polarization Pr = 16. 1 μC/cm^2 and the coercive electric field Ec = 14. 8 kV/cm. These properties are superior to those of the pure KNN ceramics. |
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| Keywords: | lead free piezoelectric ceramics piezoelectric property dielectric property ferroelectric property |
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