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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing >Synthesis of BaTiO_3 powders by a ball milling-assisted hydrothermal reaction
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Synthesis of BaTiO_3 powders by a ball milling-assisted hydrothermal reaction

机译：球磨辅助水热反应合成BaTiO_3粉体

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摘要

The effects of ball milling during the hydrothermal BaTiO_3 synthesis from nano- and sub-micron sized TiO_2 powders were studied. The synthesized BaTiO_3 powders were characterized by X-ray diffraction (XRD), a laser light scattering particle size distribution analyzer, and field emission scanning electron microscopy (FE-SEM). The XRD patterns showed that BaTiO_3 powders could be synthesized using the ball milling system at 100 ℃ and for 5 h with little contamination. The BaTiO_3 powders observed by FE-SEM were agglomerated. The agglomerated particle sizes of BaTiO_3 prepared from nano- and sub-miron sized TiO_2 particles were 152 ± 42 and 148 ± 21 nm, respectively. Furthermore, it was found that the rate constant of BaTiO_3 powder prepared from Ba(OH)_2 and sub-micrometer sized TiO_2 powder with the ball milling process was twice as large compared to a hydrothermal route without ball milling.
机译：研究了球磨对纳米和亚微米级TiO_2粉末水热合成BaTiO_3的影响。通过X射线衍射（XRD），激光散射粒度分布分析仪和场发射扫描电子显微镜（FE-SEM）对合成的BaTiO_3粉末进行表征。 X射线衍射图谱表明，球磨系统可以在100℃和5h内合成BaTiO_3粉体，且污染小。通过FE-SEM观察到的BaTiO_3粉末是团聚的。由纳米和亚微米级的TiO_2颗粒制备的BaTiO_3的团聚粒径分别为152±42和148±21 nm。此外，发现由Ba（OH）_2和亚微米尺寸的TiO_2粉末通过球磨法制备的BaTiO_3粉末的速率常数是没有球磨的水热法的两倍。

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