0.94(Mg_(1-x)Zn_(x))TiO_(3)-0.06(Ca_(0.8)Sr_(0.2))TiO_(3)微波介质陶瓷的制备及性能  

Preparation and properties of 0.94(Mg_(1-x)Zn_(x))TiO_(3)-0.06(Ca_(0.8)Sr_(0.2))TiO_(3)microwave dielectric ceramics

作　　者：张帆[1] 李金睿 张雪 王新 杨云洪 ZHANG Fan;LI Jinrui;ZHANG Xue;WANG Xin;YANG Yunhong(School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,Liaoning,China;Research Institute of Magnesite Chemical Industry,Yingkou Magnesite Chemical Industry Group Co.,Ltd.,Yingkou 115100,Liaoning,China)

机构地区：[1]沈阳工业大学材料科学与工程学院,辽宁沈阳110870 [2]营口菱镁化工集团有限公司镁化工研究院,辽宁营口115100

出　　处：《沈阳工业大学学报》2024年第6期779-785,共7页Journal of Shenyang University of Technology

基　　金：辽宁省自然科学基金区域创新联合基金项目(2020-YKLH-23)。

摘　　要：为了降低MgTiO_(3)-(Ca_(0.8)Sr_(0.2))TiO_(3)(MT-CST)微波介质陶瓷的烧结温度,改善其微波介电性能,采用化学沉淀法对MT-CST陶瓷进行了A位Zn离子掺杂,研究了Zn离子掺杂对MT-CST陶瓷的微观结构、烧结温度和微波介电性能的影响。结果表明,利用Zn^(2+)取代Mg^(2+)可以增加陶瓷的密度,降低介电损耗,使陶瓷的品质因数值得到有效提升,并且成功降低MT-CST陶瓷的烧结温度至1125℃。制备的陶瓷具有优异的微波介电性能:介电常数约为21.6,品质因数约为50800 GHz,谐振频率温度系数约为0.24×10^(-6)/℃。In order to reduce the sintering temperature of MgTiO_(3)-(Ca_(0.8)Sr_(0.2))TiO_(3)(MT-CST)microwave dielectric ceramics and improve their microwave dielectric properties,the A-site Zn^(2+)doping was performed on MT-CST ceramics by chemical precipitation method,the effects of Zn^(2+)doping on the microstructure,sintering temperature and microwave dielectric properties of MT-CST ceramics were studied.The results show that the substitution of Mg^(2+)by Zn^(2+)can increase the density of ceramics,reduce the dielectric loss and improve quality factor value.The sintering temperature of MT-CST ceramics can be successfully reduced to 1125℃.The as-prepared ceramics have excellent microwave dielectric properties,with dielectric constant of 21.6,quality factor of 50800 GHz and temperature coefficient of resonance frequency of 0.24×10^(-6)/℃,respectively.

关 键 词：MT-CST陶瓷 Zn离子掺杂 化学沉淀法 微观结构 烧结温度 微波介电性能 密度 品质因数 

分 类 号：TB34[一般工业技术—材料科学与工程]