泥浆分散特性对ZST陶瓷微波介电性能的影响  

Effects of slurry dispersion on the microwave dielectric properties of ZST ceramics

作　　者：吴坚强[1] 吴迪[2] 李小红[1] 孙丽[1] 胡飞[1] 

机构地区：[1]景德镇陶瓷学院,江西景德镇333001 [2]东南大学集成电路学院,江苏南京210096

出　　处：《电子元件与材料》2013年第8期32-34,共3页Electronic Components And Materials

基　　金：江西省科技支撑计划资助项目(No.20122BBE500035;赣财教指[2012]87号)

摘　　要：以TiO2、ZrO2、SnO2、La2O3和NiO为原材料,用固相法制备了性能优良的ZST微波陶瓷。通过研磨工艺调节泥浆颗粒尺寸,同时考察泥浆pH值对泥浆分散特性的影响,借助电泳仪、酸度计和粒度分析仪对泥浆ζ电位、pH值和颗粒尺寸进行了表征,用XRD和SEM对预烧后粉体的晶相结构和陶瓷的晶粒形貌进行了分析,并研究了ZST陶瓷微波介电性能。结果表明:不同pH值泥浆有不同的ζ电位,研磨工艺对颗粒尺寸有较大影响。当pH值大于10.5时,泥浆处于良好的分散状态,颗粒尺寸d50为0.65μm时,ZST陶瓷具有良好的微波介电性能。Excellent（Zr0.8,Sn0.2）TiO4 microwave creamics were prepared by solid reaction process by using raw materials TiO2,ZrO2,SnO2,La2O3and NiO.The slurry dispersion was investigated by the particle size through grinding and also their pH value,The ζ potential,pH value,and particle size were characterized by the electrophoresis meter,the pH meter and the granulometer,respectively,and the crystallization and particle morphology were observed by XRD and SEM.Results show that the slurry are well dispersed when pH higher than 10.5,and the ZST ceramics have excellent microwave dielectric properties when d50is 0.65 μm.

关 键 词：(Zr0 8 Sn0 2)TiO4 颗粒尺寸 泥浆pH值 Ζ电位 晶体结构 微波介电性能 

分 类 号：TQ174[化学工程—陶瓷工业]