Kr. Han et al., Simple synthesis of submicrometer lead titanate powder by precipitation ofTiO2 precursor on PbO particulates, J AM CERAM, 83(4), 2000, pp. 971-973
A simple way to prepare phase-pure, submicrometer PbTiO3 powder was tried b
y precipitation. Precipitation was carried out in an aqueous PbO slurry usi
ng aqueous TiCl4 and dilute NH4OH at pH 9.5 +/- 0.1. The TG/DSC curves of t
he PT precursor show weight loss of similar to 7% and two exotherms at 492
degrees and 522 degrees C, They are attributed to the crystallization of te
tragonal PbTiO3,, XRD shows that tetragonal PbTiO3, can be obtained by heat
treatment around 500 degrees C via a noncrystalline state. SEM shows that
the PbTiO3, powder calcined at 600 degrees C for 1 h is well crystallized a
nd in the range of 100-300 nm.