Microwave dielectric properties of CaWO4-Li2TiO3 ceramics added with LBSCA glass for LTCC applications
Microwave dielectric properties of CaWO4-Li2TiO3 ceramics added with LBSCA glass for LTCC applications
复制标题
添加 LBSCA 玻璃的 CaWO4-Li2TiO3 陶瓷的微波介电性能用于 LTCC 应用
DOI：
10.1016/j.ceramint.2016.06.161
复制
发表时间：
2016
影响因子：
5.2
通讯作者：
Tang Xiaoli
中科院分区：
文献类型：
--
作者：
Zhang Shuo;Su Hua;Zhang Huaiwu;Jing Yulan;Tang Xiaoli
In this work, 0.86CaWO4–0.14Li2TiO3ceramics were prepared via a traditional solid-state process. The effects of Li2O–B2O3–SiO2–CaO–Al2O3(LBSCA) addition on the phase formation, sintering character, microstructure and microwave dielectric properties of the ceramics were investigated. A small amount of LBSCA addition could effectively lower the sintering temperature of the ceramics. X-ray diffraction analysis revealed that CaWO4and Li2TiO3phases coexisted without producing any other crystal phases in the sintered ceramics. The dielectric constant andQfvalues were related to the amount of LBSCA addition and sintering temperatures. All specimens could obtain near-zero temperature coefficient (τf) values through the compensation of the positiveτfof Li2TiO3and the negativeτfof CaWO4. The 0.86CaWO4–0.14Li2TiO3ceramic with 0.5 wt% LBSCA addition and sintered at 900 °C for 3 h exhibited excellent microwave dielectric properties ofεr=12.43,Qf=76,000 GHz andτf=−2.9 ppm/°C.
