Fabrication of Lead Barium Titanate Ceramics via Conventional Solid-State Mixed Oxide Technique

摘要

(Pb_(0.925)Ba_(0.075))TiO_3 (PBT) ceramics have been prepared using a mixed oxide technique. The phase formation and morphology were studied in detail via X-ray diffraction (XRD) and scanning electron microscopy (SEM). The pure tetragonal perovskite structure was discovered with calcination temperatures above 800°C. The percentage of perovskite phase and particle size tends to increase with the increasing of calcination temperatures. The PBT ceramics sintered at various temperatures belonged to a pure tetragonal perovskite phase. The average grain sizes increased from 0.90 to 6.44μm with the increase of sintering temperatures from 1100 to 1200°C. The highest density was obtained from the sample that sintered at 1150 and 1200°C.