Influence of Li-B-Si Additions on the Sintering and Microwave Dielectric Properties of Ba-Nd-Ti Ceramics |
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| Authors: | Enzhu Li Shuxin Duan Shumeng Sun Hao Li Yuean Mi Xiaohua Zhou Shuren Zhang |
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| Affiliation: | 1. School of Microelectronics and Solid State Electronics, University of Electronic Science and Technology of China, Chengdu, 610054, People’s Republic of China
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| Abstract: | Li2O-B2O3-SiO2 (LBS) synthesized via a solid-state reaction process was chosen as a novel sintering aid for tungsten-bronze-type Ba4Nd9.3Ti18O54 (BNT) ceramic. The effects of LBS additions on the sintering behaviors, microstructures, and microwave dielectric properties of the BNT ceramic have been investigated, indicating that LBS addition obviously lowered the sintering temperature of the BNT ceramic without damaging its microwave dielectric properties. BNT ceramic doped with 3 wt.% and 4 wt.% LBS addition could be well sintered at 975°C and 950°C for 3 h and had excellent properties: ε r = 65.99, Q × f = 4943 GHz (f = 4.4 GHz), τ f = 19 ppm/°C, and ε r = 64.56, Q × f = 4929 GHz (f = 4.3 GHz), τ f = 11 ppm/°C, respectively. |
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