温度稳定型超低损耗Mg(Zr_(0.05)Ti_(0.95))O_3微波介质陶瓷的研制  

DEVELOPMENT OF TEMPERATURE STABILITY Mg(Zr_(0.05)Ti_(0.95_)O_3 MICROWAVE DIELECTRIC CERAMICS WITH ULTRA-LOW LOSS

作　　者：余洪滔[1] 薛小梅[1] 徐光亮[1] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-国家重点实验室培育基地,绵阳621010

出　　处：《中国陶瓷》2012年第9期12-15,共4页China Ceramics

基　　金：西南科技大学的博士学位基金(No.09zx7104)资助

摘　　要：为了提高具有超低损耗Mg(Zr0.05Ti0.95)O3陶瓷的温度稳定型,采用Sr2+掺杂来对其进行改性研究。采用传统固相法制备了摩尔比Mg∶Sr∶Zr∶Ti∶O=1-x∶x∶0.05∶0.95∶3(x=0、0.03、0.05和0.07)陶瓷,利用XRD和SEM分析其结构和相组成。随着Sr含量的增加,陶瓷中出现了SrTiO3相,起到了补偿Mg(Zr0.05Ti0.95)O3温度系数的作用。当Mg∶Sr=0.95∶0.05,1390℃烧结4小时的陶瓷一个近零的温度系数(2.1ppm/℃),高的品质因子(207000)以及一个高的介电常数(20.9)。该陶瓷有望应用现代微波领域。In order to improve the temperature stability of Mg（Zr0.05Ti0.95）O3 ceramics with ultra low loss,the properties were modified using Sr2＋ additive.The ceramics with a atom ratio of Mg∶Sr∶Zr∶Ti∶O=（1-x）∶x∶0.05∶0.95∶3（x=0,0.03,0.05 and 0.07） were prepared by conventional solid state method.The structures and phase compositions were analyzed by XRD and SEM.With increasing SrO,the phase of SrTiO3 appeared,which compensated the negative temperature coefficient of resonant frequency of Mg（Zr0.05Ti0.95）O3.At the ratio of Mg∶Sr=0.95∶0.05,the ceramics sintered at 1390℃ for 4 hours exhibited a near zero temperature coefficient of 2.1ppm/℃,a high quality factor of 207000 and a high dielectric constant of 20.9,which de

关 键 词：微波介质陶瓷 谐振频率温度系数 MGTIO3 

分 类 号：TN304.82[电子电信—物理电子学]