Research on Zn0.99Cu0.01Al2O4-TiO2 microwave dielectric ceramics

被引：0

作者：

Li, Yue-Ming ^{[1
]}

Hong, Wen-Hai ^{[1
]}

Xie, Zhi-Xiang ^{[1
]}

Wang, Zhu-Mei ^{[1
]}

Shen, Zong-Yang ^{[1
]}

Liao, Run-Hua ^{[1
]}

机构：

[1] Jiangxi Key Laboratory of Advanced Ceramic Materials, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, China

来源：

Rengong Jingti Xuebao/Journal of Synthetic Crystals | 2015年 / 44卷 / 05期

关键词：

Microwave dielectric ceramics - Microwave dielectric properties - Optimal microwave - Sintering properties - Sintering temperatures - Solid-state routes - Temperature coefficient - Two phase systems;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

(1-x)Zn0.99Cu0.01Al2O4-xTiO2 (ZCAT, x=0-0.25) ceramics were prepared via the conventional solid-state route using ZnO, CuO, Al2O3, TiO2 as raw materials. The effects of TiO2 additives on sintering properties, phase composition, microstructure and microwave dielectric properties were investigated. The results show that Zn0.99Cu0.01Al2O4 and TiO2 can coexist with each other and form a two-phase system. The sintering temperature significant decreases by increasing TiO2 content. The bulk volume density and the quality factor of ZCAT decreases, while the dielectric constant of ZCAT increases as the TiO2 content increasing. The frequency temperature coefficient could adjust nearly-zero by adding an appropriate amount of TiO2. The optimal microwave dielectric properties were obtained in 0.77Zn0.99Cu0.01Al2O4-0.23TiO2 with the dielectric constant Εr=11.4, the quality factor Q×f=38155 GHz and the frequency temperature coefficient τ f=-2.4×10-6/ which was sintered at 1380 for 3 h in air. ©, 2015, Chinese Ceramic Society. All right reserved.

引用

页码：1171 / 1175