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首页> 美国卫生研究院文献>Materials >Effect of Microwave Sintering on the Properties of 0.95(Ca0.88Sr0.12)TiO3–0.05(Bi0.5Na0.5)TiO3 Ceramics
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Effect of Microwave Sintering on the Properties of 0.95(Ca0.88Sr0.12)TiO3–0.05(Bi0.5Na0.5)TiO3 Ceramics

机译：微波烧结对0.95（Ca0.88Sr0.12）TiO3-0.05（Bi0.5Na0.5）TiO3陶瓷性能的影响

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Perovskite ceramics are a common microwave dielectric material, but the development and application of this material has been limited by the high, positive resonance frequency temperature coefficient and sintering temperature. Therefore, adjusting the temperature coefficient of the resonance frequency and reducing the sintering temperature have become important research directions. In this work, 0.95(Ca0.88Sr0.12)TiO3–0.05(Bi0.5Na0.5)TiO3 ceramics (referred to as 0.95CST-0.05BNT) were prepared by standard solid-state reaction and microwave sintering. Microwave sintering greatly shortened the sintering period and holding time. Moreover, the 0.95CST–0.05BNT ceramics showed more uniform grain size distribution, and microwave sintering reduced energy consumption in the experiment. Therefore, the temperature coefficient of the resonance frequency of MWS ceramics was reduced by 119 × 10−6 /℃. All of the ceramics, which were sintered at 1300 °C for 40 minutes, showed optimal microwave dielectric properties: εr = 187.6, Q × f = 8958 GHz, and τf = +520 × 10−6 /°C.
机译：钙钛矿陶瓷是一种常见的微波介电材料，但是这种材料的开发和应用受到高的正共振频率温度系数和烧结温度的限制。因此，调节共振频率的温度系数和降低烧结温度已成为重要的研究方向。在这项工作中，通过标准的固态反应和微波烧结制备了0.95（Ca0.88Sr0.12）TiO3-0.05（Bi0.5Na0.5）TiO3陶瓷（称为0.95CST-0.05BNT）。微波烧结大大缩短了烧结周期和保温时间。此外，0.95CST–0.05BNT陶瓷的晶粒尺寸分布更均匀，微波烧结降低了实验的能耗。因此，MWS陶瓷的共振频率温度系数降低了119×10 -6 /℃。在1300°C下烧结40分钟的所有陶瓷均表现出最佳的微波介电性能：εr= 187.6，Q×f = 8958 GHz，τf= +520×10 −6 / ℃。

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