硅酸盐学报

CuO掺杂对ZnZrNb2O8微波介质陶瓷性能的影响

作者：洪倩李月明谢志翔沈宗洋王竹梅宋福生洪燕

单位：景德镇陶瓷大学材料科学与工程学院江西省先进陶瓷材料重点实验室江西景德镇 333403

关键词：微波介质陶瓷氧化铜掺杂高品质因数

分类号：TQ174

出版年,卷(期):页码：2017,45(3):354-359

DOI：10.14062/j.issn.0454-5648.2017.03.05

摘要：

以分析纯的ZnO、ZrO2、CuO及Nb2O5为原料，采用传统固相法制备了Zn1–xCuxZrNb2O8 (ZCZN, x=0.00–0.05)微波介质陶瓷，研究了不同CuO添加量对ZCZN陶瓷的烧结性能、显微结构、相组成以及微波介电性能的影响，利用X射线衍射仪、扫描电子显微镜和网络分析仪等对其微观结构、形貌以及微波介电性能进行表征。结果表明：CuO的添加能有效降低ZnZrNb2O8陶瓷的烧结温度，提高其品质因数和介电常数。当x=0.03时，陶瓷可在1 200 ℃烧结并获得最佳微波介电性能：介电常数εr=30.1，品质因数Q×f=53 037 GHz，频率温度系数τf = –57.21×10–6 /℃。

Zn1–xCuxZrNb2O8(ZCZN, x=0.00–0.05) microwave dielectric ceramics were prepared by a conventional mixed solid method using ZnO, ZrO2, CuO and Nb2O5 as raw materials. The effect of CuO additives on the sinterability, phase composition, microstructure, and microwave dielectric properties was investigated by X-ray diffraction, scanning electron microscopy and network analysis, respectively. The results reveal that CuO additives can lower the sintering temperature, increase the quality factor and improve the dielectric constant of ZnZrNb2O8 ceramics. The optimal microwave dielectric properties of ceramics sintered at 1 200 ℃ (i.e., dielectric constant εr of 30.1, quality factor Q×f of 53 037 GHz and frequency temperature coefficient τf of –57.21×10–6/℃) are obtained when x = 0.03.

基金项目：

江西省教育厅科技落地计划(KJLD12084)；江西省赣鄱英才555工程领军人才计划；景德镇市科技计划；景德镇陶瓷大学研究生创新基金(JYC201513)；江西省教育厅科技项目(GJJ150896)。

作者简介：

洪倩(1993—)，女，硕士研究生。

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