微波液相合成钛酸锶钡纳米粉体  

Preparation of BST Nanopowders by Microwave-liquid Phase Processing

作　　者：陈杰[1] 

机构地区：[1]西安科技大学材料科学与工程学院,陕西西安710054

出　　处：《压电与声光》2009年第4期523-524,527,共3页Piezoelectrics & Acoustooptics

基　　金：教育部"新世纪优秀人才资助计划"基金资助项目(NCET-04-0971);陕西省教育厅专向科研计划基金资助项目(08JK347)

摘　　要：以BaCl2、TiCl4为原料，以NaOH为沉淀剂，利用微波加热技术在低温下快速制备出了Ba0.8Sr0.2TiO3纳米粉体。应用X衍射、透投射电镜、X-射线荧光分析等对粉体的结构、形貌进行了分析。研究表明，在约80℃，5～10min内即制备出颗粒大小分布均匀、粒径在φ50nm的高纯BST纳米粉体，该方法合成粉体属于立方相钙钛矿晶体结构，粒子形状近似为球形。粉体的杂质含量小于电子工业行业标准。The synthesis of barium strontium titanate （Ba0.8 Sr0.2 TiO3 ） nanopowders had been investigated under microwave-low temperature conditions in the temperature 80 ℃ using BaCl2, TICl4 as Ba and Ti sources,and NaOH as the precipitant, respectively. The crystallized products were characterized by powder X-ray diffraction （XRD）, transmission electron microscopy（TEM）,X-ray fluoreseence（XRF）. The experimental results showed that the pre- pared BST nanopowders with higher purity and particle sizes of 50 nm and almost spherical particle shape by the microwave-low temperature process are cubic phase. Besides, the microwave-low temperature synthesis route was rapid （only 5-10 min）,and the content of impurity was below the industry standard.

关 键 词：纳米粉 BST 微波 立方相 

分 类 号：TN304[电子电信—物理电子学] TM282[一般工业技术—材料科学与工程]