Preparation of PBZT Ceramics via Solid State Reaction Method

摘要

Lead barium zirconate titanate [((Pb_(0.975)Ba_(0.025))(Zr_(1-x)Ti_x)O_3; (PBZT)] ceramics were prepared via solid state reaction method with 0 < =x < =. The calcination temperatures were between 800 and 1000 deg C for 1 h and the sintering temperature was 1200 deg Cfor 3 h. It was found that the structural phase indexed in the orthorhombic phase for x = 0 sample. The tetragonal phase was detected in 0.25 < =x < = 1 ceramic samples. Microstructurally, with x value increased from 0 to 1 the average grain size increaseed from 0.74 [im to 1.99 ptm. The fractured surfaces represented an intra-granular cleavage in samples with 0 < =x < = 0.75, whereas the x = 1 samples displayed mainly an.inter-granular mode. The density of the ceramics tended to decreased with the increasing of the x value.