烧结温度对Ba(Zr0.1Ti0.9)O3-Zn-Nb-Sm陶瓷微观结构与介电性能的影响

摘要

采用溶胶-凝胶法制备了Ba(Zr0.1Ti0.9)O3-Zn-Nb-Sm粉体,在1260℃-1320℃不同烧结温度下制备了锆钛酸钡基陶瓷.利用XRD和SEM图分析了样品的物相及微观形貌,并研究了烧结温度对相组成、微观形貌、居里温度及介电性能的影响规律.研究表明:陶瓷在1280℃烧结时,样品为钙钛矿结构,晶粒大小均匀,陶瓷的室温介电常数达到19384,容温变化率符合Y5V标准.%The Ba(Zr0.1Ti0.9)O3-Zn-Nb-Sm powder was prepared by sol-gel method,the barium titanate ceramics was prepared at different temperatures from 1260 ℃ to 1320 ℃.The relationships among the phase compositions,microstructures,and dielectric properties of sintered ceramics were investigated with sintering temperature to increase.Samples of the phase and microstructure are analyzed by using XRD and SEM.The studied shows that samples are the perovskite structure and uniform grain size as well as met the Electronic Industries Alliance Y5V specifications and that room temperature dielectric constant was higher than 19384,and the ceramic at 1280 ℃ for sintering.