人工晶体学报2011，Vol.40Issue(2)：445-449,5.
织构化K0.5Na0.5NbO3无铅压电陶瓷的性能研究
Study on Properties of Textured Nao. 5Ko. 5NbO3 Lead-free Piezoelectric Ceramics
摘要
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 showed that the orientation degree of the textured ceramics increased as template contents increasing, and the orientation degree reached 0.69 when the template content was up to 15 wt％. Meanwhile, the highest piezoelectric constant d33 (128 pC/N) was obtained for the textured ceramics containing 10 wt％ template, which possessed the orientation degree of 0.58. At the same composition, the optimized sintering temperature and soaking time were 1100 ℃ and 5 h, respectively.关键词
Na0.5K0.5NbO3/无铅压电陶瓷/织构化陶瓷/反应模板晶粒生长Key words
Na0. 5 K0. 5 Nb03/ lead-free piezoelectric ceramics/ textured ceramic/ RTGG分类
通用工业技术引用本文复制引用
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):445-449,5.基金项目
国家自然科学基金(50962007,91022027) （50962007,91022027）
江西省自然科学基金(2009GZC0063) （2009GZC0063）
江西省教育厅青年科技基金(GJJ095333) （GJJ095333）
