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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers & Short Notes >Effects of Glass Addition on Microwave Dielectric Properties of Zn_(0.95)Mg_(0.05)TiO_3 + 0.25TiO_2 Ceramics
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Effects of Glass Addition on Microwave Dielectric Properties of Zn_(0.95)Mg_(0.05)TiO_3 + 0.25TiO_2 Ceramics

机译：玻璃添加量对Zn_（0.95）Mg_（0.05）TiO_3 + 0.25TiO_2陶瓷微波介电性能的影响

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摘要

The effects of Bi_2O_3 addition on the microwave dielectric properties and the microstructures of Zn_(0.95)Mg_(0.05)TiO_3 + 0.25TiO_2 with 1 wt% 3ZnO-B_2O_3 (ZnBO-ZMT′) ceramics prepared by conventional solid-state routes have been investigated. In a preliminary study, it was shown that ZnBO-ZMT′ ceramics can be sintered to a theoretical density higher than 95% at 900℃. In this study, the effects of B_2O_3 additions of up to 10wt% on the sintering characteristics of the ZnBO-ZMT′ ceramics was investigated at the sintering temperatures ranging from 860 to 960℃. Sintered ceramic samples were characterized by X-ray diffraction and scanning electron microscopy (SEM). It was found that as the content of Bi_2O_3 increases, the density of the sintered ceramics increases, and the sintering temperature can be lowered to 880℃ by adding 5 wt% Bi_2O_3. The ZnBO-ZMT′ ceramic with 5 wt% Bi_2O_3 addition sintered at 880℃ exhibits the optimum dielectric properties: Q x f = 4000 GHz, ε_r = 24.6, and τ_f = -14ppm/℃. Unlike the ZnBO-ZMT′ ceramic without Bi_2O_3 addition sintered at above 920℃, the ceramics with Bi_2O_3 additions show no Zn_2TiO_4 existence at 960℃ sintering. It is therefore demonstrated that the addition of Bi_2O_3 can suppress the formation of Zn_2TiO_4 in ZnBO-ZMT′ ceramics.
机译：研究了Bi_2O_3的添加对微波固相法制备的ZnZn（0.95）Mg_（0.05）TiO_3 + 0.25TiO_2与1wt％3ZnO-B_2O_3（ZnBO-ZMT'）陶瓷的微波介电性能和微观结构的影响。 。初步研究表明，ZnBO-ZMT'陶瓷可以在900℃烧结至理论密度高于95％。本研究研究了在860到960℃的烧结温度下，添加高达10wt％的B_2O_3对ZnBO-ZMT'陶瓷烧结性能的影响。通过X射线衍射和扫描电子显微镜（SEM）表征烧结的陶瓷样品。发现随着Bi_2O_3含量的增加，烧结陶瓷的密度增加，通过添加5 wt％的Bi_2O_3可以将烧结温度降低至880℃。在880℃下烧结的BiBO_2O_3含量为5wt％的ZnBO-ZMT′陶瓷表现出最佳的介电性能：Q x f = 4000 GHz，ε_r= 24.6，τ_f= -14ppm /℃。与在920℃以上未烧结Bi_2O_3的ZnBO-ZMT′陶瓷不同，在烧结960℃时，添加Bi_2O_3的陶瓷不存在Zn_2TiO_4。因此证明了Bi_2O_3的添加可以抑制ZnBO-ZMT'陶瓷中Zn_2TiO_4的形成。

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