Ba_2Ti_9O_(20) CERAMIC FROM BaSO_4 AND TiO_2 POWDER SYNTHESIS MIXTURE

摘要

In this work the BaSO_4 powder was synthesized from BaCO_3 powder that was attacked with HCl. Then BaCl_2 was precipitated in (NH4)_2 SO_4, containing TiO_2 powder. The influences of processing and TiO_2 particles presence were investigated by X-rays diffraction and SEM. It was found that the washing of BaSO_4 -^sTiO_2 precipitated by ethanol greatly benefited the formation of smaller size particles.