CaCu_3Ti_4O_(12)巨介电常数多孔陶瓷的制备  

Preparation of CaCu_3Ti_4O_(12) giant dielectric porous ceramics

作　　者：曾华[1] 王聪[1] 周密[1] 邓晓清[1] 余冬冬[1] 王升高[1,2] 

机构地区：[1]武汉工程大学材料学院,湖北武汉430074 [2]湖北省等离子体化学与新材料重点实验室,湖北武汉430074

出　　处：《武汉工程大学学报》2010年第5期74-76,共3页Journal of Wuhan Institute of Technology

基　　金：武汉工程大学校长基金;武汉工程大学教学研究项目

摘　　要：通过固相合成及常压烧结的方法,以淀粉为造孔剂制备了CaCu3Ti4O12(CCTO)巨介电常数多孔陶瓷材料,采用XRD、SEM等测试手段对其合成与烧结过程中的物相变化进行了表征.结果表明,制备该CCTO多孔陶瓷的适宜烧结温度为1075℃,试样结晶完整,孔隙率大,大孔与小孔之间形成交错分布的开气孔结构,能够达到预期的效果.CaCu3Ti4O12 ceramics with giant dielectric constant were prepared by solid-state reaction followed by densification at high temperatures.The synthesis and sintering as well as the dielectric properties of the ceramics were investigated by means of XRD,SEM.It was found that the optimum temperature for sintering CaCu3Ti4O12 was 1 075 ℃,the crystallization of sintered specimen integrity,porosity,and large holes and small holes staggered between the distributions of open pore structure.

关 键 词：CACU3TI4O12 多孔陶瓷 巨介电常数 

分 类 号：TB3[一般工业技术—材料科学与工程]