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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Preparation mechanism of (Bi_2O_3)_(0.75)(Dy_2O_3)_(0.25) nano-crystalline solid electrolyte
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Preparation mechanism of (Bi_2O_3)_(0.75)(Dy_2O_3)_(0.25) nano-crystalline solid electrolyte

机译:(Bi_2O_3)_(0.75)(Dy_2O_3)_(0.25)纳米晶固体电解质的制备机理

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摘要

(Bi_2O_3)_(0.75)(Dy_2O_3)_(0.25) nanopowder was prepared by reverse chemical titration co-precipitation method. The reaction mechanism during the precipitation process was discussed by thermodynamic analysis. Thermal decomposition behavior of the precursor was investigated using X-ray diffractometry and TG-MS analysis. The precursor was calcined at 500 °C for 3 h to obtain (Bi_2O_3)_(0.75)(Dy_2O_3)_(0.25) nanopowder. Using the nanopowder, pellets with relative density higher than 94% were obtained at 700 °C for 2 h by pressureless sintering, and the grains remained at the nano-scale with size of 72 nm.
机译:通过反向化学滴定共沉淀法制备了(Bi_2O_3)_(0.75)(Dy_2O_3)_(0.25)纳米粉。通过热力学分析讨论了沉淀过程中的反应机理。使用X射线衍射和TG-MS分析研究了前体的热分解行为。将前体在500℃下煅烧3小时以获得(Bi_2O_3)_(0.75)(Dy_2O_3)_(0.25)纳米粉。使用纳米粉末,通过无压烧结在700℃下2小时获得相对密度高于94%的丸粒,并且晶粒保持在纳米级,尺寸为72nm。

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