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Effect of starting materials on the properties of solid-state reacted barium titanate powder

机译:起始原料对固态反应钛酸钡粉末性能的影响

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This study examined the effects of the combination of starting materials on the properties of solid-state reacted BaTiO3 using two different types of BaCO3 and TiO2. The reaction temperature was evaluated by thermal gravimetry/differential thermal analysis (TG/DTA). In addition, the effect of mechanochemical activation by high energy milling and the Ba/Ti molar ratio on the reaction temperature, particle size and tetragonality were investigated. TG/DTA demonstrated that the TiO2 phase and size plays a major role in decreasing the reaction temperature and particle size. With the optimum selection of starting materials and processing conditions, BaTiO3 with a particle size < 200 nm and a tetragonality (= c/a) of approximately 1.008 was obtained.
机译:本研究使用两种不同类型的BaCO3和TiO2考察了起始原料组合对固态反应的BaTiO3性能的影响。通过热重分析/差热分析(​​TG / DTA)评价反应温度。此外,还研究了高能磨碎机械化学活化和Ba / Ti摩尔比对反应温度,粒度和四方性的影响。 TG / DTA表明,TiO 2相和尺寸在降低反应温度和粒度中起主要作用。通过对原料和工艺条件的最佳选择,获得了粒径小于200 nm,四方性(= c / a)为1.008的BaTiO3。

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