CuO掺杂对ZnNb_2O_6介质陶瓷性能的影响  

Effects of CuO Additives on the Properties of ZnNb_2O_6 Dielectric Ceramics

作　　者：王茹玉[1] 黄金亮[1] 周焕福[1] 殷镖[1] 孙道明[1] 赵高磊[1] 

机构地区：[1]河南科技大学材料科学与工程学院,洛阳471003

出　　处：《材料导报》2005年第11期125-127,共3页Materials Reports

基　　金：教育部留学归国人员基金资助(2003-14);河南省高校创新人才基金资助(2001-213)

摘　　要：采用传统的固相反应法制备 CuO 掺杂 ZnNb_2O_6介质陶瓷,借助 XRD、SEM 和 LCR 测试仪,研究了CuO 掺杂对 ZnNb_2O_6介质陶瓷的烧结特性及介电性能的影响。结果表明,CuO 掺杂能有效降低 ZnNb_2O_6陶瓷的烧结温度,提高介电常数,优化频率温度系数。1050℃烧结掺杂1.0wt%CuO 的 ZnNb_2O_6陶瓷具有较好的综合介电性能:介电常数ε_r=34,介电损耗 tanδ=0.00039,频率温度系数τ_f=-46.21×10^(-6)/C。The dielectric ceramics ZnNb2O6 doped with CuO can be prepared by conventional mixed solid method. Their microstructures are analyzed by XRD and SEM and their dielectric properties are determined by LCR testing analyzer. The effects of CuO additives on the sinterability and dielectric properties of ZnNb2O6 ceramics are investigated in this paper. The results reveal that CuO additives can lower the sintering temperature, increase the dielectric constant and improve the temperature coefficient of resonant frequency of ZnNb2O6 ceramics. The 1.0wt% CuO- doped ZnNb2O6 ceramics sintered at 1050℃ has the optimum dielec tricproperties.εr=34, tanδ=0. 00039, τf=46.21×10^-6/℃.

关 键 词：CuO掺杂 ZnNb2O6 烧结温度 介电性能 

分 类 号：TM25[一般工业技术—材料科学与工程]