Abstract

The columnar NaNbO₃-based particles with a perovskite structure were successfully synthesized through topochemical microcrystal conversion. First, the precursor was fabricated by facile MSS in the Nb₂O₅–KCl system. A good dispersion and high aspect ratio were satisfied simultaneously with a small amount of SrCO₃ and KSr₂Nb₅O₁₅ (KSN) seed. Then, columnar NaNbO₃-based particles, 10 μm in length and 1 μm in diameter, were obtained via the simple molten salt reaction from the precursor. The results of NaNbO₃-based ceramics suggested that the as-synthesized NaNbO₃-based particles had the good mechanical properties and homogeneous chemical composition.

Graphic Abstract

抽象的

通过拓扑化学微晶转化成功合成了具有钙钛矿结构的柱状NaNbO ₃基颗粒。首先，在Nb ₂ O ₅ -KCl系统中通过简便的MSS制备前体。少量的SrCO ₃和KSr ₂ Nb ₅ O ₁₅（KSN）种子可以同时满足良好的分散性和高纵横比。然后，通过简单的熔融盐反应从前体获得了长度为10μm且直径为1μm的柱状的基于NaNbO ₃的颗粒。NaNbO ₃基陶瓷的结果表明，合成后的NaNbO ₃基颗粒具有良好的机械性能和均一的化学组成。

图形摘要