Synthesis of Na0.5Bi0.5TiO3 Submicron Particles in Molten Salt

Paisan Setasuwon; S. Kijamnajsuk

doi:10.4028/www.scientific.net/AMR.55-57.161

Paper Titles

Microstructures of Zirconium Titanate Powders and Ceramics Prepared by Solid-State Mixed Oxide Method
p.145

Preparation and Properties of B₂O₃-Doped Ba(Zr_0.07Ti_0.93)O₃ Ceramics
p.149

Characterization of LiNbO₃Powder Prepared by Citrate Gel Method
p.153

X-Ray Absorption Spectroscopy Study of Ba_1-xSr_xTiO₃(x = 0.0-0.2) at the Ti-K and Ba-L_III Edges
p.157

Synthesis of Na_0.5Bi_0.5TiO₃ Submicron Particles in Molten Salt
p.161

Effects of Starting Materials on Molten Salt Synthesis of Bi₄Ti₃O₁₂
p.165

Effect of ZrO₂ Doping on Crystal Structure, Microstructure and Phase Transition of Lead Titanate Ceramics
p.169

Fabrication of Barium Stannate Tatanate Ceramics via Combustion Technique
p.173

The Effect of Excess PbO on Crystal Structure and Microstructure of (Pb_0.925Ba_0.075)TiO₃ Ceramics
p.177

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 55-57Synthesis of Na0.5Bi0.5TiO3 Submicron Particles in...

Synthesis of Na_0.5Bi_0.5TiO₃ Submicron Particles in Molten Salt

Abstract:

Powder size is a major factor determining the characteristics of processing variables and end-products of ceramic materials. Na0.5Bi0.5TiO3 is one of the potential candidates for non-lead piezoelectric materials, synthesis of Na0.5Bi0.5TiO3 particles in molten salt was studied. Two salt systems, NaCl-KCl and Na2SO4-3K2SO4 were investigated. Only at 850°C and above, BNT was completely formed without any secondary phases in both eutectic chloride and sulfate salt. By substituting chloride with sulfate, the particle size of BNT could be greatly reduced to a few hundreds nanometer at 850°C. Submicron particles of SrTiO3 could also be synthesized in eutectic sulfate salt at 850°C, It is evident that molten salt synthesis could be employed to produce submicron particles of Na0.5Bi0.5TiO3 and SrTiO3. Molten salt synthesis is low-cost and capable to produce fine powders of various complex-oxides.