Fabrication of Lead-Free Barium Titanate Piezoelectric Ceramics from Barium Titanate Powders with Different Particle Size Synthesized by Hydrothermal Method

摘要

In this study, three types of BaTiO3 powders with different particle size synthesized by hydrothermal method were used to fabricate the lead-free barium titanate piezoelectric ceramics. The BaTiO3 ceramics from these three types of BaTiO3 powders were sintered at different temperature (1150 - 1350 ℃) using traditional sintering method, and their piezoelectric properties were investigated and compared. The results indicate that the BaTiO3 piezoelectric ceramics from BT03 powder exhibit highest d33 value (over 350 pC/N). The reasons were also investigated by comparing the properties of three kinds of BaTiO3 powders and their compacts sintered at different temperature.