CaTiO_3:Zn纳米粉体的溶胶凝胶法制备及性能研究  

Preparation and properties of CaTiO_3:Zn nanoparticles based on sol-gel method

作　　者：黄万群[1] 张启龙[1] 杨辉[1] 申乾宏[1] 

机构地区：[1]浙江大学材料科学与工程学系,浙江杭州310027

出　　处：《电子元件与材料》2012年第4期7-9,共3页Electronic Components And Materials

基　　金：国家科技支撑计划资助项目(No.2009BAG12A07);浙江省创新团队项目资助(No.2011R09010)

摘　　要：采用溶胶凝胶法制备了CaTiO3∶Zn纳米粉体,研究了所制粉体的微观结构及性能。结果表明,所制粉体粒径约50 nm,主晶相为CaTiO3,Zn以Zn2TiO4形式存在于晶相中。1 150℃下烧结所得CaTiO3∶Zn纳米粉体性能较优:比固相法的烧结温度降低约250℃,相对介电常数εr=155,品质因数Q.f提高至6 633 GHz。Nano-sized CaTiO3;Zn particles were successfully synthesized through sol-gel technique. The microstructure and other properties of the prepared nano particles were investigated. The average particle size of the CaTiO3 ： Zn powders calculated from TEM micrograph is about 50 nm. CaTiO3 is formed as the ＇major phase, and the added Zn exists as Zn2TiO4 phase. The CaTiO3 ： Zn ceramics can be well sintered at 1 150℃, about 250 ℃ lower than those of ceramics obtained by conventional solid state method. The sintered CaTiO3： Zn ceramics possess a gr of 155, and a Q· fvalue of 6 633 GHz which is greatly improved.

关 键 词：CaTiO3∶Zn 溶胶凝胶法 纳米粒子 介电性能 

分 类 号：TM28[一般工业技术—材料科学与工程]