METHOD FOR PRODUCING BARIUM TITANATE POWDER USING TITANIUM 2-ALKOXYETHOXIDE PRECURSOR

摘要

PURPOSE: A process for producing barium titanate powder by the hydrothermal reaction of a titanium organic metal compound with a barium salt is provided which gives the superfine powder having a mean particle size of 20 to 30 nm and being excellent in crystallinity. CONSTITUTION: A process comprises preparing a sol precursor using titanium acylate and a barium compound, co-precipitating by injecting the sol precursor to a concentrated alkali solution at a pH higher than 13, crystallizing barium titanate powder from the precipitating solution and purifying through washing processes to obtain superfine particles of crystalline barium titanate useful in the field of electronics. In future, by applying the superfine barium titanate powder to the field of electronic, information and communication, in particular a laminated capacitor, a barium titanate layer it will improve product quality and reduce the production cost.