| 固相法和水热法制备BNT无铅压电陶瓷及其性能表征 |
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| 引用本文： | 郭华,王秀峰,朱孔军,裘进浩,季宏丽.固相法和水热法制备BNT无铅压电陶瓷及其性能表征[J].西北轻工业学院学报,2009,27(4):31-34. |
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| 作者姓名： | 郭华 王秀峰 朱孔军 裘进浩 季宏丽 |
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| 作者单位： | 郭华,王秀峰(陕西科技大学材料科学与工程学院,陕西,西安,710021);朱孔军,裘进浩,季宏丽(南京航空航天大学智能材料与结构航空科技重点实验室,江苏,南京,210016) |
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| 基金项目： | 教育部培育重大项目，江苏省自然基金 |
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| 摘 要： | 采用固相法和水热法成功制备出钛酸铋钠（Bi0.5Na0.5TiO3,简写为BNT）粉体,并利用此粉体烧结出致密的BNT陶瓷.用XRD、SEM分别对粉体和陶瓷的相组成、粒度、显微结构等进行了表征,并检测了其不同烧结温度下的线收缩率和相对体积密度.固相法所制备的BNT陶瓷具有优良的压电性能,其压电常数d33高达80 pC/N,而机电耦合系数kp也达到了26%.利用水热法只需在160℃下保温16 h就合成了具有单一钙钛矿结构的BNT粉体,其粒径为0.6-1μm.
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| 关 键 词： | 固相法 水热合成 BNT 无铅压电陶瓷 |
CHARACTERIZATION OF BNT CERAMIC FABRICATED BY SOLID REACTION AND HYDROTHERMAL SYNTHESIS |
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| Affiliation: | GUO Hua , WANG Xiu-feng, ZHU Kong-jun, QIU Jin-hao ,JI Hong-li(1. School of Materials Science and Engineering, Shaanxi University of Science ＆ Technology,Xi＇an 710021, China;2. The Aeronautic Key Laboratory for Smart Materials ＆ Structures, Nanjing University of Aeronautics Astronautics,Nanjing 210016, China) |
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| Abstract: | Solid state reaction and hydrothermal methods were employed to prepare bismuth sodium titanate （Bi0. 5 Na0.5 TiO3, BNT） ceramic powder. The phases, granularity, microstructure of the ceramic powder and ceramic were investigated by XRD, SEM. The linear contractive rate and the relative density of the ceramics sintered at different temperatures were also measured. The BNT ceramics prepared by solid state method exhibit excellent performance, with a higher d33 of 80 pC/N and a larger electromeehanieal coupling coefficient kp of 26%. The single perovskite structure of BNT powders were synthesized by hydrothermal method just under 160 ℃ for 16 h. The sizes of the particles are about 0. 6-1μm. |
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| Keywords: | BNT |
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