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首页> 外文期刊>Journal of Ceramic Processing Research. (Text in English) >Dielectric properties of strontium titanate synthesized by means of solid state reactions activated mechanically
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Dielectric properties of strontium titanate synthesized by means of solid state reactions activated mechanically

机译：通过机械激活的固态反应合成钛酸锶的介电性能

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摘要

In this work, strontium titanate samples were prepared starting from SrCO3 and TiO2 powders mixture. Raw materials were activated mechanically in a planetary mill and then calcined at different temperatures (900 to 1300 degrees C). Powders after grinding were analyzed by differential thermal analysis in order to follow the carbonate decomposition. On the other hand, samples resulting from heat treatment were characterized by XRD, SEM and electrical measurements. XRD analysis determines that SrTiO3 synthetized presents the cubic structure of perovskite. Complete reaction for SrTiO3 compound formation occurs at 1200 degrees C. SEM observations indicate the presence of a microstructure with very small gran size and consequently a large number of grain boundaries. Electrical measurements suggest the formation of a material with high insulating capacity. With this evidence, it can be concluded that solid state reactions activated mechanically, proved to be an effective way to fabricate strontium titanate compound with very fine microstructure and high insulating behavior.
机译：在这项工作中，从SrCO 3和TiO2粉末混合物开始制备钛酸锶样品。在行星磨机中机械地激活原料，然后在不同的温度下煅烧（900至1300℃）。通过差分热分析分析研磨后粉末以遵循碳酸盐分解。另一方面，通过XRD，SEM和电测量的热处理引起的样品。 XRD分析确定SRTIO3合成呈现Perovskite的立方结构。 SRTIO3化合物形成的完全反应发生在1200℃下。SEM观察表明存在具有非常小的GRAN尺寸的微观结构，因此大量的晶界。电测量表明具有高绝缘容量的材料的形成。通过这种证据，可以得出结论，固态反应机械激活，证明是制造具有非常细微的微观结构和高绝缘行为的钛酸锶化合物的有效方法。

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