Study on the Thermal Decomposition Mechanism and Reaction Kinetics of the Precursor of Ultrafine BaTiO_3 with High Purity

The thermal decomposition mechanism is studied by using FT-IR,XRD to followthe process of thermal decomposition of the precursor of BaTiO_3 at the differental temperature.The kinetic parameters of the three steps of the process are calculated according to the Broidomethods of linearization. The conditions of the process of thermal treatment are optimized ac-cording to thermal decomposition mechanism and kinetic parameters. The powder obtained is ofnearly spherical morphology,small particle size and large specific area which is good electronic ce-ramic powder.