| SCNN无铅压电陶瓷的制备和特性研究 |
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| 引用本文： | 王越, 张依才, 胡振江, 高翔, 郭晓峰, 蒋毅坚. SCNN无铅压电陶瓷的制备和特性研究[J]. 北京工业大学学报, 2009, 35(1): 125-129. |
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| 作者姓名： | 王越 张依才 胡振江 高翔 郭晓峰 蒋毅坚 |
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| 作者单位： | 1.1. 北京工业大学 应用数理学院, 北京 100124 |
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| 摘 要： | 为制备高性能的无铅压电陶瓷,在传统工艺下,制备了CaxSr2-xNaNb5O15陶瓷各组分的样品,研究了压电介电性能随组分的变化.结果表明:在x=0.14附近CaxSr2-xNaNb5O15材料具有较好的压电和介电性能.该材料有2个相变点,一个接近280℃,另一个在-20℃附近,具有明显的介电弛豫现象.X射线衍射和Raman光谱实验表明该材料是四方钨青铜结构,Ca2+替代Sr2+引起了晶格畸变,从而导致物理性能的提高.电镜扫描照片显示瓷体致密.
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| 关 键 词： | 无铅压电陶瓷 (CaxSr1-x)2NaNb5O15陶瓷 压电性能 介电性能 |
| 收稿时间： | 2008-04-16 |
Piezoelectric and Dielectric Properties of SCNN System Ceramics |
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| WANG Yue, ZHANG Yi-cai, HU Zhen-jiang, GAO Xiang, GUO Xiao-feng, JIANG Yi-jian. Piezoelectric and Dielectric Properties of SCNN System Ceramics[J]. Journal of Beijing University of Technology, 2009, 35(1): 125-129. |
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| Authors: | WANG Yue ZHANG Yi-cai HU Zhen-jiang GAO Xiang GUO Xiao-feng JIANG Yi-jian |
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| Affiliation: | 1.1. College of Applied Science, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | By traditional sintering process,we studied the piezoelectric and dielectric properties of (Ca_xSr_(1-x))_2NaNb_5O_(15)system ceramics(0.02≤x≤0.35).The results show that it has better piezoelectric and dielectric properties near x=0.14 and has two phase transition temperature.One is nearly 280℃,and the other is nearly-20℃.X-ray diffraction and Raman spectroscopy show that it is tungsten bronze structure.The replacement of Ca~(2+)by Sr~(2+)caused the lattice distortion which results in the enhancement of physical properties.Scanning electron microscope photos show that the system ceramics is very dense.It is a lead-free piezoelectric ceramics with practical prospects. |
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| Keywords: | lead-free piezoelectric ceramics Ca_xSr_(2-x)NaNb_5O_(15) ceramics dielectric properties piezoelectric properties |
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