添加CuO对Zn_2SiO_4陶瓷微波介电性能的影响  

Effects of CuO Addition on the Properties of Zn_2SiO_4 Microwave Dielectric Ceramics

作　　者：胡婧雯[1] 李谦[1] 黄金亮[1] 顾永军[1] 李栋[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《压电与声光》2015年第2期301-303,306,共4页Piezoelectrics & Acoustooptics

基　　金：河南省国际科技合作计划基金资助项目(0346620012);河南科技大学研究生创新基金资助项目(CXJJ-YJS-Z016)

摘　　要：研究了固相添加CuO对Zn1.8SiO3.8陶瓷的烧结温度、微观结构、相结构及微波介电性能的影响。结果表明,CuO的加入有助于降低Zn1.8SiO3.8陶瓷的烧结温度,Zn1.8SiO3.8陶瓷的烧结温度从1 350℃降到1 000℃。其中掺杂w(CuO)=5%(质量分数)的Zn1.8SiO3.8陶瓷,在1 000℃烧结3h可获得结构致密的烧结体,且微波介电性能达到最佳:介电常数εr=6.5,品质因数与频率之积Q·f=39 373GHz,频率温度系数τf=-48×10-6/℃。The effects of CuO addition on the sintering temperature,microstructure,phase composition and microwave dielectric properties of Zn1.8SiO3.8ceramics were studied in this paper.The results show that,The addition of CuO is helpful to decrease the sintering temperature of Zn1.8SiO3.8ceramics,its sintering temperature is decreased from 1 350℃to 1 000℃.When 5%（mass fraction）CuO is introduced,after sintering at 1 000℃for 3h,the density of Zn1.8SiO3.8 ceramics was relatively high,optimal dielectric properties are obtained：εr =6.5,Q ·f=39 373 GHz,τf=-48×10-6/℃.

关 键 词：微波介质陶瓷 低温烧结 氧化铜 硅酸锌 微波介电性能 

分 类 号：TN61[电子电信—电路与系统] TQ174[化学工程—陶瓷工业]