Synthesis and characterization of Bi3NbTiO9 powders prepared by molten salt method

Bi3NbTiO9 powders were obtained by the molten salt synthesis method. The influence of the calcinations temperature, holding time, salt species and amount on the crystallization habit and morphology of Bi3NbTiO9 powders was studied. Under the same processing conditions, the Bi3NbTiO9 powders synthesized from KCl generally showed a lower crystallization temperature and smaller particle size than those synthesized using NaCl as salt. Furthermore, the salt content showed a strong influence on the particle size of the synthesized Bi3NbTiO9 powders. The particle size of Bi3NbTiO9 powders prepared in NaCl sulfate flux increased as the mole ratio of the sulfate salts to Bi3NbTiO9 was increased. Compared with the calcinations temperature the influence of holding time on the particle size was not obvious although the prolonged holding time could improve the particle morphology greatly.