DIELECTRIC PROPERTIES OF ZNTIO_3 MICROWAVE CERAMICS CONSOLIDATED WITH MGTIO_3  

作　　者：吴霞宛 王玉梅 肖谧 

机构地区：[1]KEY LABORATORY OF ADVANCED CERAMICS AND MACHINING TECHNOLOGY OF EDUCATION MINISTRY SCHOOL OF ELECTRONIC INFORMATION ENGINEERING,TIANJIN UNIVERSITY,TIANJIN 300072,CHINA

出　　处：《Transactions of Tianjin University》2006年第1期28-32,共5页天津大学学报（英文版）

基　　金：SUPPORTED BY NATIONAL NATURAL SCIENCE FOUNDATION OF CHINA( NO. 50172035).

摘　　要：Stabilized ZnTiO4 was prepared by doping magnesium oxide through traditional solid state reaction. The experimental results indicate that zinc titanate crystals doped with magnesium oxide grow well and the decomposition into Zn2TiO4 and TiO2 is restrained through traditional solid state reaction, By adjusting molar ratio of MgO, better properties can be obtained The dielectric properties of the ceramics doped with 30% MgO（ molar percentage） sintered at 1060℃ are as follows：the value of quality factor is greater than 20000（6.5 GHz ）, the temperature coefficient of resonance frequency is about 2 ± 10^-6 /℃,the dielectric constant ranges from 180 to 22.Besides,it is proved that heat treatment can optimize microstructure and the value of quality factor, which increases from 23833.93 to 47584.00 after 2h of heat treatment at 1040℃.稳定的 ZnTiO_3 被通过 traditionalsolid 状态反应做氧化镁准备。试验性的结果显示锌泰坦吃了与氧化镁做的晶体成长很好，进 Zn_2TiO_4 和 TiO_2 的分解通过传统的稳固的状态被制止反应。由调整 MgO 的臼齿的比率，更好的性质能被获得。与在 1 060 deg C 的 sintered 如下是的 30% MgO (臼齿的百分比) 做的陶艺的绝缘的性质：优秀因素的价值比大 20 000 (6.5 GHz ) ，回声频率的温度系数是大约 2 X 10 ^(-6)/deg C，从 18 ～ 22 的绝缘的经常的范围。而且，热处理能优化微观结构和优秀因素的价值，这被证明，它增加从 23 833.93 ～ 47 584.00 在在 1 040 deg C 的热处理的 2 h 以后。

关 键 词：microwave ceramics magnesium titanate heat treatment quality factor 

分 类 号：TQ174.1[化学工程—陶瓷工业]