Preparation and Densification study of Barium Zirconate (BaZrO3) nanopowders

摘要

Barium Zirconate (BaZrO3) is a promising candidate for structural to electronic application. Different industry demands nano scale powder for the technology enhancement and hence, the preparation of BaZrO3 nano-powders and their sintering study through microstructure synchronization are the prime interest of this research. A typical combined wet chemical and calcination technique was employed to synthesis of 100nm BaZrO3 nano-powders. Elongated Barium carbonate (BaCO3) nano rod was prepared through wet chemical method, whereas, near spherical yttria stabilized zirconia nanoparticle was used to prepare this BaZrO3. Transmission electron microscope analysis (TEM), XRD and BET surface area confirmed the purity and morphology of developed nanoparticles. Prior to sintering, dilatometric study was conducted to understand the sintering behaviour this class of nanoparticles. A wide horizon of sintering profile optimized the sintering condition with consideration of relative density and microstructure. The nano powder was near to 98% dense at 1650oC for 2h. Field Emission Scanning Electron (FESEM) microscope study reveals the grain size is around 250nm. The developed perovskite BaZrO3 nano powders could be successfully used for different sectors.