首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Phase evolution, microstructure, thermal stability and conductivity behavior of (Ba1-xBi0.67xK0.33x)(Ti1-xBi0.33xSn0.67x)O-3 solid solutions ceramics
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Phase evolution, microstructure, thermal stability and conductivity behavior of (Ba1-xBi0.67xK0.33x)(Ti1-xBi0.33xSn0.67x)O-3 solid solutions ceramics

机译:(BA1-XBI0.67XK0.33X)(TI1-XBI0.33XSN0.67X)O-3固体溶液陶瓷(TI1-XBI0.67xK0.3X)的相位演化,微观结构,热稳定性和电导率行为

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摘要

(Ba1-xBi0.67xK0.33x)(Ti1-xBi0.33xSn0.67x)O-3 (BBKTBS) [x = 0.02, 0.04, 0.06, 0.08, 0.1 and 0.12] solid solutions ceramics were fabricated via a traditional solid phase reaction method. X-ray diffraction and Raman spectra confirmed that the ceramics transform from tetragonal phase (x = 0.04) to pseudo-cubic phase (0.06 = x = 0.12). When x = 0.1, the ceramic exhibited the optimum dielectric properties with large relative permittivity epsilon(r)(similar to 1850), low tan delta (2%) in temperatures from 20 degrees C to 200 degrees C and good thermal stability Delta epsilon/epsilon(25 degrees C) (=+/- 15%) from -55 degrees C to 160 degrees C. The conductivity behavior of ceramic at high temperatures shown that the basic mechanisms of conduction and relaxation processes were thermal activation, and oxygen vacancies might be the ionic charge transport carriers. (C) 2018 Elsevier B.V. All rights reserved.
机译:(BA1-XBI0.67XK0.33X)(TI1-XBI0.33XSN0.67X)O-3(BBKTBS)[x = 0.02,0.04,0.06,0.08,0.1和0.12]通过传统的固相反应制造固体溶液陶瓷 方法。 X射线衍射和拉曼光谱证实,陶瓷从四方相(X = 0.04)变换为伪立方相(0.06 = x& = 0.12)。 当x = 0.1时,陶瓷表现出具有大相对介电常ε(R)(类似于1850)的最佳介电性能,低TaNδ(2%)在20℃至200摄氏度和良好的热稳定性δ ε/ epsilon(25℃)(25℃)(25℃)(& = + / - 15%)从-55℃-160℃。陶瓷在高温下的电导率行为表明,传导和弛豫过程的基本机制是热激活, 氧空位可能是离子电荷运输载体。 (c)2018年elestvier b.v.保留所有权利。

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