聊城大学学报：自然科学版2012，Vol.25Issue(3)：50-53,107,5.
BNBT改性KNN基无铅压电陶瓷的性能研究
Properties of BNBT Modified KNN-based Lead-free Piezoceramics
摘要
Abstract
(1-x)(Na0.52K0.48)NbO3-x(Bi0.5Na0.5)0.94Ba0.06TiO3(KNN-xBNBT) lead-free piezoceramics were prepared by conventional solid-state sintering method.The samples were characterized by X-ray techniques and scanning electron microscopy.Piezoelectric and dielectric data were presented.All samples possess orthorhombic perovskite phases,and not any secondary phase can be certified.The average grain size decreases firstly and then increases with increasing BNBT content.Dielectric and piezoelectric properties of the ceramics are influenced obviously by BNBT addition.Appropriate amount of BNBT results in an improvement in electrical properties of the KNN ceramics.Enhanced piezoelectric and electromechanical properties are obtained with x=0.005: d33=123pC/N,kp=44%,tanδ=2.2%,showing that they could be promising candidates as lead-free piezoelectric materials.关键词
无铅压电陶瓷/KNN/BNBT/压电性能Key words
lead-free piezoceramics/KNN/BNBT/piezoelectric properties分类
信息技术与安全科学引用本文复制引用
魏燕燕,赵盼盼,晁雯娜,张培玉,叶锐,杜鹃..BNBT改性KNN基无铅压电陶瓷的性能研究[J].聊城大学学报：自然科学版,2012,25(3):50-53,107,5.基金项目
国家自然科学基金资助项目 （）
山东省自然科学基金资助项目 （）
