| 0．992K0．5Na0．5NbO3-0．008BiFeO3无铅压电陶瓷制备及压电性能研究 |
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| 引用本文： | 郝航飞,谈国强,耶维,晏霞,任慧君.0．992K0．5Na0．5NbO3-0．008BiFeO3无铅压电陶瓷制备及压电性能研究[J].西北轻工业学院学报,2013(6):73-76,94. |
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| 作者姓名： | 郝航飞 谈国强 耶维 晏霞 任慧君 |
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| 作者单位： | 陕西科技大学材料科学与工程学院,陕西西安710021 |
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| 基金项目： | 陕西省教育厅科研计划专项项目（12JK0445）;国家级大学生创新创业训练计划项目（201210708023） |
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| 摘 要： | 以水热法制备的0．992K0．5Na0．5NbO3（BF）粉体等为原料，采用常压烧结法在1065℃下烧结2h制备了0．992K0．5Na0．5NbO3-0．008BiFe03无铅压电陶瓷，并研究了BiFeO3掺杂对0．992K0．5Na0．5NbO3-0．008BiFeO3无铅压电陶瓷结构和压电的影响．研究结果表明：BiFeO3掺杂使K0.5Na0.5NbO3无铅压电陶瓷正交相减弱，晶粒尺寸由6／2m减小到1μm；压电性能有一定提高，压电常数（d33）、机电耦合系数（kp）分别达到120pC／N和37．8，居里温度Tc由444．4℃减少至420．6℃．
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| 关 键 词： | 0 992K0 5Na0 5NbO3水热法 无铅压电 掺杂 |
Microstructure,electric features of 0.992K0.5Na0.5NbO3-0.008BiFeO3 lead-free piezoelectric ceramics |
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| HAO Hang-fei,TAN Guo-qiang,YE Wei,YAN Xia,REN Hui-jun.Microstructure,electric features of 0.992K0.5Na0.5NbO3-0.008BiFeO3 lead-free piezoelectric ceramics[J].Journal of Northwest University of Light Industry,2013(6):73-76,94. |
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| Authors: | HAO Hang-fei TAN Guo-qiang YE Wei YAN Xia REN Hui-jun |
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| Affiliation: | (College of Materials Science and Engineering, Shaanxi University of Science Technology, Xi＇an 710021 China) |
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| Abstract: | In this study, Lead-free piezoelectric ceramics of the 0.992K0.5Na0.5NbO3-0.008BiFeO3 were prepared at 1 025 ℃ for 2 h, following the mixed pure KNbO3 （KN）, NaNbO3（NN）, BiFeO3 （BF） powers which were prepared by a hydrothermal method. The phase structure and the electric properties of the ceramics were studied. It is found that the doping of BiFeO2 decreases the value of orthogonality of the KNN ceramics and decreases the grain size from 6 μm to 1 ,μm. Simultaneously the piezoelectric properties is increasing, the piezoelectric constant d33 and planar mode electromechanical coupling coefficient kp reach to 120 Pe/N and 37.8, the curie temperature Tc decreases from 444.4 ℃ to 420.6 ℃. |
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| Keywords: | 0．992K0．5Na0．5NbO3-0．008BiFeO3 hydrothermal method Lead free piezoelectric doping |
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