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Dispersing and doping of BaTiO3 powder by adsorption method were investigated. Ultrafine BaTiO3 powders were dispersed in the aqueous with ammoniumized citrate (NH4-CA) or ammoniumized citric lanthanum chelate (NH4-La-CA) as dispersant by ultrasonic bath. Better disper-sion of BaTiO3 slurry was obtained in the aqueous with NH4-La-CA than that of NH4-CA when the mass ratio of citric acid (CA) to BaTiO3 was less than 0.007. The pH value hardly affects the dispersion property of BaTiO3 suspension dispersed by NH4-La-CA. BaTiO3 powder could be well dispersed (median size D50=0.45 μm) and also doped with high uniformity of added components by adsorbing citric acid chelate on surface . Compared with solid mixing, better microstructure and properties of La/Mn codoped ceramics were obtained by adsorption method.
Dispersing and doping of BaTiO3 powders by adsorption method were investigated. Ultrafine BaTiO3 powders were dispersed in the aqueous with ammoniumized citrate (NH4-CA) or ammoniumized citric lanthanum chelate (NH4-La-CA) as dispersant by ultrasonic bath. of BaTiO3 slurry was obtained in aqueous with NH4-La-CA than that of NH4-CA when the mass ratio of citric acid (CA) to BaTiO3 was less than 0.007. The pH value hardly affects the dispersion property of BaTiO3 suspension dispersed by Compared with high mixing of added components by adsorbing citric acid chelate on surface. NH 4-La-CA BaTiO 3 powder could be well dispersed (median size D50 = 0.45 μm) and compared with solid mixing, better microstructure and properties of La / Mn codoped ceramics were obtained by adsorption method.