Influence of Ta5+ Doping on the Piezoelectric Properties of KNN Ceramics

摘要：

　　KNbO3,NaNbO3 and NaTaO3 powders were synthesized by hydrothermal method and the KNN ceramics were prepared by conventional sintering technique.The phase constitution and morphology were analyzed by X-ray diffraction and SEM.The KNN ceramics sintering temperature and the influence of Ta5+ doping on ceramic properties were explored.The optimal sintering temperature of KNN ceramics is 950℃,and the main phase is orthorhombic structure.After the substitution of Ta5+,the optimal sintering temperature is increased to 975℃.As the increase of doping amount,the piezoelectric properties were significantly enhanced.The specimen doping 0.08 mol% Ta5+ exhibits the enhanced electrical properties (d33=125pC/N,Qm=131,and kp=0.24).

关键词： KNN doping piezoelectric properties

作者: Peng Xiong Guoqiang Tan Huijun Ren

作者单位: Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science and Technology,Xian,Shaanxi,710021,China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 1399-1402

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）