Marković S, Mitrić M, Starcević G, Uskoković D
Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Knez Mihailova 35/IV, Belgrade 11001, Serbia.
Ultrason Sonochem. 2008 Jan;15(1):16-20. doi: 10.1016/j.ultsonch.2007.07.008. Epub 2007 Aug 9.
BaTiO3 (BT) powder, with average particle size of 1.4 microm, was synthesized by solid-state reaction. A high-intensity ultrasound irradiation (ultrasonication) was used to de-agglomerate micro-sized powder to nano-sized one. The crystal structure, crystallite size, morphology, particle size, particle size distribution, and specific surface area of the BT powder de-agglomerated for different ultrasonication times (0, 10, 60, and 180 min) were determined. It was found that the particles size of the BT powder was influenced by ultrasonic treatment, while its tetragonal structure was maintained. Therefore, ultrasonic irradiation can be proposed as an environmental-friendly, economical, and effective tool for the de-agglomeration of barium titanate powders.
通过固态反应合成了平均粒径为1.4微米的钛酸钡（BT）粉末。采用高强度超声辐照（超声处理）将微米级粉末解团聚为纳米级粉末。测定了不同超声处理时间（0、10、60和180分钟）下解团聚的BT粉末的晶体结构、微晶尺寸、形态、粒径、粒径分布和比表面积。结果发现，超声处理会影响BT粉末的粒径，同时保持其四方结构。因此，超声辐照可作为一种环境友好、经济有效的钛酸钡粉末解团聚工具。
