X7R型BaTiO_3基复相陶瓷的制备和表征  

The Preparation and Characterization of X7R Type BaTiO_3-Based Composite Ceramics

作　　者：牛瑞媛[1] 杜锋涛[1] 畅柱国[1] 崔斌[1] 唐宗薰[1] 

机构地区：[1]西北大学合成与天然功能高分子化学教育部重点实验室,陕西省物理无机化学重点实验室,化学与材料科学学院,西安710069

出　　处：《电子器件》2010年第2期142-145,共4页Chinese Journal of Electron Devices

基　　金：陕西省“13115”科技创新工程重大科技专项资助(2007ZDKG-61);陕西省教育厅2009年度科学研究计划项目(09JC01)

摘　　要：本文使用ZBSO纳米复合物作为助烧剂,利用溶胶-凝胶法制备了钛酸钡(高温组元,记为BT)和Nb、Co、Nd掺杂钛酸钡基(低温组元,记为BTCNC)复相陶瓷。研究了高低温组元比例对陶瓷相组成,微观结构和介电性能的影响。实验结果表明,当高低元配比为0.83BT^0.17BTNCN时,加入0.25 wt%的助烧剂,所得复相陶瓷在1 200℃烧结6h后,其介电性能满足X7R标准,最大容温变化率小于13%。By using sol-gel process and the ZBSO nano-composites as sintering aids,we synthesized BaTiO3（high-temperature units,abbreviation as BT） and Nb,Co,Nd doped BaTiO3（low-temperature units,abbreviation as BTCNC） compound composite ceramics.The ratio of two components which effected on phase composition,microstructure and dielectric properties of ceramics was studied,respectively.The results indicated that when the ratio of two components was 0.83 BT^0.17 BTNCN and the amount of sintering aids was 0.25 wt %,the ceramics sintered at 1 200 ℃ for 6h met the character of X7R,and the max temperature coefficient of capacitance（abbreviation as TCC） was less than 13 %.

关 键 词：X7R BaTiO3基复相陶瓷 助烧剂 介电性能 

分 类 号：O614[理学—无机化学]