锆钛酸钡纳米粉体的室温合成和烧结特性  

Room Temperature Synthesis of Barium Zirconate Titanate Nanopowders and Their Sintering Characteristics

作　　者：齐建全[1] 邹晗[1] 米永杰[1] 张晓燕[1] 齐西伟[1] 吴音[2] 岳振兴[2] 李龙土[2] 

机构地区：[1]东北大学秦皇岛分校,河北秦皇岛066004 [2]清华大学,北京100084 [3]精细陶瓷和工艺国家重点实验室

出　　处：《稀有金属材料与工程》2013年第S1期215-217,共3页Rare Metal Materials and Engineering

基　　金：精细陶瓷与工艺国家重点实验室开放课题基金资助

摘　　要：利用钛酸四丁酯、硝酸锆、氢氧化钡为原料在室温下,直接合成了颗粒尺寸均匀,组分连续可调的高性能锆钛酸钡(BZT)纳米粉体。粉体颗粒的大小约10nm。整个工艺过程易于操控,绿色、环保、无污染。纳米粉体的合成高效、简便、能耗低。纳米粉体在不同的温度下处理显示,粉体在600℃以上颗粒迅速长大,在无任何添加剂时,1150℃以上可以烧结成致密陶瓷,其介电常数峰值可以大于13000,损耗低于0.015。Barium zirconate titanate (BZT) nanopowders were directly synthesized at room temperature with the raw materials of tetrabutyl titanate, zirconium nitrate and barium octahydrate. The composites of the as-prepared powders can be adjusted continuously and the grain size of them is homogeneous as around of 10 nm. Without any contamination, all the synthesis process is green and environment-friendly. The synthesis of the nanopowders consumes low energy, and also the operation is convenient and efficient. The as-prepared powders annealed at different temperatures, show that the grain grows rapidly above 600 ℃. The green body pressed with as-prepared powders and without any additives can be sintered as dense ceramics at the temperature above 1150 ℃. The peak of the dielectric constant can reach greater than 13 000 with loss lower than 0.015.

关 键 词：BZT 纳米 直接合成 烧结 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O614.41[理学—无机化学]