硅酸盐学报2018，Vol.46Issue(3)：361-368,8.DOI:10.14062/j.issn.0454-5648.2018.03.08
烧结助剂CuO掺杂对0.97(K0.5Na0.5)NbO3-0.03Bi(Zn2/3Nb1/3)O3陶瓷相结构、微观形貌及电性能的影响
Effects of CuO Doping on Phase Structure, Microstructure Morphology and Electrical Properties of 0.97(K0.5Na0.5)NbO3-0.03Bi(Zn2/3Nb1/3)O3 Ceramics
摘要
Abstract
Lead-free 0.97(K0.5Na0.5)NbO3-0.03Bi(Zn2/3Nb1/3)O3+xCuO(abbreviated as KNN-3BZN-xCu) ceramics were synthesized by a conventional mixed oxide method (i.e., the MO method). The effects of CuO doping amount on the structure and electrical properties of the ceramics were investigated. CuO, as a sintering aid, induces changes in both the microstructure and the electrical properties. The dielectric relaxor behaviors are also enhanced. The KNN-3BZN-0.02Cu ceramics exhibit a high dielectric permittivity (i.e., 1886) and a small variation (i.e.,ΔC/C150℃≤±15％), and a low dielectric loss (i.e., tgδ≤0.029) at 150-300℃. The KNN-3BZN-0.02Cu ceramics also show the optimum piezoelectric properties (i.e.,d33=164pC/N, andkp=0.37) due to the maximum bulk density.关键词
相结构/微观结构/电性能/铌酸钾钠/氧化铜Key words
phase transition/microstructure/electronic properties/potassium-sodium niobate/copper oxide.分类
通用工业技术引用本文复制引用
程花蕾,肖健,高鹏,严云云,高拴平,赵立芳..烧结助剂CuO掺杂对0.97(K0.5Na0.5)NbO3-0.03Bi(Zn2/3Nb1/3)O3陶瓷相结构、微观形貌及电性能的影响[J].硅酸盐学报,2018,46(3):361-368,8.基金项目
宝鸡文理学院重点项目(ZK15044) （ZK15044）
陕西省大学生创新创业项目(201610721039) （201610721039）
陕西省教育厅专项项目(15JK1021) （15JK1021）
国家青年科学基金(21501007). （21501007）
