|
|
- 2017
钠过量0.94(K0.5Na0.5)NbO3-0.06LiNbO3无铅压电陶瓷显微结构和电学性能的研究
|
Abstract:
采用固相合成法制备了0.94(K0.5Na0.5+x) NbO3-0.06LiNbO3无铅压电陶瓷，并对钠过量对陶瓷的晶体结构、显微形貌、电学性能的影响进行了研究. XRD测试结果显示，所研究的所有陶瓷样品均为单一钙钛矿结构，而且在室温下均为正交相和四方相两相共存.当x=0.01时，陶瓷具有最优的压电性能，其压电常数d33、相对介电常数εr、平面机电耦合系数Kp和厚度机电耦合系数Kt分别为255pC/N，850，0.46和0.42.研究结果可以为KNN基压电陶瓷的结构和性能调控提供有益的参考.
A 0.94(K0.5Na0.5+x) NbO3-0.06LiNbO3 lead-free piezoceramics was synthesized with the solid-state reaction method, and its crystal structure, microstructure, and electrical properties were investigated. The X-ray diffraction results showed that all samples of the studied ceramics possessed a pure perovskite structure, and orthorhombic and tetragonal phases co-existed at room temperature. When x=0.01, the ceramics showed the optimum piezoelectric properties, and the piezoelectric constant d33, relative dielectric constant εr, planar electromechanical coupling factor Kp and thickness electromechanical coupling factor Kt were 255 pC/N, 850, 0.46 and 0.42, respectively. The research results in this paper could provide a beneficial reference for the regulation of the structure and properties in KNN-based piezoelectric ceramics
| [1] | WU Jia-gang, XIAO Ding-quan, ZHU Jian-guo, et al. Potassium-Sodium Niobate Lead-Free Piezoelectric Materials: Past, Present, and Future of Phase Boundaries[J]. Chemical Reviews, 2015, 115(7): 2559-2595. DOI:10.1021/cr5006809 |
| [2] | 姚吉伦, 张星, 周振, 等. 陶瓷膜技术在水处理中的研究进展[J]. 重庆理工大学学报(自然科学版), 2016, 30(12): 69-74. |
| [3] | JAEGER R E, EGRETON L. Hot Pressing of Potassium-Sodium Niobates[J]. Journal of the American Ceramic Society, 1962, 45(5): 209-213. DOI:10.1111/jace.1962.45.issue-5 |
| [4] | 冉启义, 张耕, 赵佰强. 铌酸锂晶体中的氢离子及其影响的第一性原理研究[J]. 西南大学学报(自然科学版), 2015, 37(11): 98-102. |
| [5] | LI Jing-feng, WANG Ke, ZHU Fang-yuan, et al. (K, Na)NbO3-Based Lead-Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaing Challenges[J]. Journal of the American Ceramic Society, 2013, 96(12): 3677-3696. DOI:10.1111/jace.12715 |
| [6] | LEE S C, YEO H G, CHO J H, et al. Alkali Metal Non-Stoichiometric Effects in (K0.5Na0.5)NbO3 BasedPiezoelectric Ceramics[J]. Journal of the Korean Physical Society, 2010, 56(12): 453-456. DOI:10.3938/jkps.56.453 |
| [7] | SAITO Y, TAKAO H, TANI T, et al. Lead-Free Piezoelectric[J]. Nature, 2004, 432(7013): 84-87. DOI:10.1038/nature03028 |
| [8] | LIN Dun-min, KIN Wing kwok, HELEN Lai-wa Chan. Effect of Alkali Elements Content on the Structure and Electrical Properties of (K0.48Na0.48Li0.04)(Nb0.90Ta0.04Sb0.06)O3 Lead-Free Piezoelectric Ceramics[J]. Journal of the American Ceramic Society, 2009, 92(11): 2765-2767. DOI:10.1111/jace.2009.92.issue-11 |
| [9] | ZHAO Xiao-kun, ZHANG Bo-ping, ZHAO Lei, et al. Modified Phase Transition and Electrical Properties of [Li0.05(Na0.535K0.48)0.95](Nb0.94Sb0.06)O3 Lead-Free Piezoelectric Ceramic by Sintering Temperature[J]. Rare Netals, 2012, 31(6): 590-594. DOI:10.1007/s12598-012-0563-y |
| [10] | LI Hai-tao, ZHANG Bo-ping, SHANG Peng-peng, et al. Phase Transition and High Piezoelectric Properties of Li0.058(Na0.52+xK0.48)0.942NbO3 Lead-Free Ceramics[J]. Journal of the American Ceramic Society, 2011, 94(2): 628-632. DOI:10.1111/jace.2011.94.issue-2 |
| [11] | KIM M S, LEE D S, PARK E C, et al. Effect of Na2O Additions on the Sinterability and Piezoelectric Propertiesof Lead-Free 95(Na0.5K0.5)NbO3-5LiTaO3 Ceramics[J]. Journal of the European Ceramic Society, 2007, 27(13): 4121-4124. |
| [12] | KIM M S, JEONG S J, SONG J S. Microstructures and Piezoelectric Properties in the Li2O-Excess 0.95(Na0.5K0.5)NbO3-0.05LiTaO3 Ceramics[J]. Journal of the American Ceramic Society, 2007, 90(10): 3338-3340. DOI:10.1111/jace.2007.90.issue-10 |
| [13] | WANG Ke, LI Jing-feng, LIU Nan. Piezoelectric Properties of Low-Temperature Sintered Li-Modified (Na, K)NbO3 Lead-Free Ceramics[J]. Applied Physics Letters, 2008, 93(9): 092904. DOI:10.1063/1.2977551 |
| [14] | HUANG Yan-qiu, DU Hai-wei, FENG Wei, et al. Influence of SrZrO3 Addition on Structural and Electrical Properties of (K0.45Na0.51Li0.04)(Nb0.90Ta0.04Sb0.06)O3 Lead-Free Piezoelectrical Ceramics[J]. Journal of Alloys and Compounds, 2014, 590: 435-439. DOI:10.1016/j.jallcom.2013.12.116 |
| [15] | ZHANG Bo-ping, LI Jing-feng, WANG Ke, et al. Compositional Dependence of Piezoelectric Properties in NaxK1-xNbO3 Lead-Free Ceramics Prepared by Spark Plasma Sintering[J]. Journal of the American Ceramic Society, 2006, 89(5): 1605-1609. DOI:10.1111/jace.2006.89.issue-5 |
| [16] | GUO Y P, KAKIMOTO, OHSATO H. Phase Transition Behavior and Properties of (Na0.5K0.5)NbO3-LiNbO3 Ceramics[J]. Applied Physics Letters, 2004, 85(18): 4121-4123. DOI:10.1063/1.1813636 |
