| 织构化K0.5Na0.5NbO3无铅压电陶瓷的性能研究 |
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| 引用本文： | 刘虎,李月明,沈宗洋,王竹梅,李润润.织构化K0.5Na0.5NbO3无铅压电陶瓷的性能研究[J].人工晶体学报,2011,40(2). |
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| 作者姓名： | 刘虎 李月明 沈宗洋 王竹梅 李润润 |
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| 作者单位： | 景德镇陶瓷学院材料科学与工程学院,山西省先进陶瓷材料重点实验室,景德镇,333403 |
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| 基金项目： | 国家自然科学基金，江西省自然科学基金，江西省教育厅青年科技基金 |
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| 摘 要： | 以分析纯Na2CO3、Bi2O3和Nb2O5为原料,以NaCl为熔盐,采用二次熔盐法和拓扑化学反应法合成各向异性片状NaNbO3粉体.以该片状NaNbO3粉体为模板品粒,以固相法合成的NaNbO3和KNbO3粉体为基料,采用流延工艺制备出较高取向度的织构化K0.5Na0.5NbO3(KNN)无铅压电陶瓷,系统研究了模板含量、烧结温度和保温时间等工艺参数对织构化KNN陶瓷显微结构和压电性能的影响规律.研究结果表明:随着模板含量的增加,陶瓷的取向度逐渐增加,当模板含量为15 wt%时,陶瓷的取向度可达0.69,当模板含量为10 wt%,1100 ℃下保温5 h烧结,可以获得具有一定织构度(f=0.58)的KNN陶瓷,并表现出优异的压电性能,d33=128 pC/ N.
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| 关 键 词： | 无铅压电陶瓷 织构化陶瓷 反应模板晶粒生长 |
Study on Properties of Textured Na0.5 K0.5 NbO3 Lead-free Piezoelectric Ceramics |
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| LIU Hu,LI Yue-ming,SHEN Zong-yong,WANG Zhu-mei,LI Run-run.Study on Properties of Textured Na0.5 K0.5 NbO3 Lead-free Piezoelectric Ceramics[J].Journal of Synthetic Crystals,2011,40(2). |
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| Authors: | LIU Hu LI Yue-ming SHEN Zong-yong WANG Zhu-mei LI Run-run |
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| Institution: | LIU Hu,LI Yue-ming,SHEN Zong-yang,WANG Zhu-mei,LI Run-run(Jiangxi Key Laboratory of Advanced Ceramic Materials,School of Materials Science and Engineering,Jingdezhen Ceramic Institute,Jingdezhen 333403,China) |
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| Abstract: | Using plate-like NaNbO3 particles prepared by molten salt method and topological chemistry method as template,NaNbO3 and KNbO3 particles prepared by solid state reaction method as base materials,potassium sodium niobate(K0.5Na0.5NbO3,KNN) textured ceramics with different orientation degrees were fabricated by tape casting process.The influence of template contents,sintering temperature and soaking time on the structure and piezoelectric properties of the ceramics was investigated systematically.The results ... |
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| Keywords: | Na0 5K0 5NbO3 |
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