Fabrication of lead-free barium titanate piezoelectric ceramics from barium titanate powders with different particle sizes synthesized by hydrothermal method

Article type: Research Article

Authors: Zhu, Kongjun^{a; b} | Qiu, Jinhao^{a; b; *} | Ji, Hongli^a | Totsuka, Atsushi^b

Affiliations: [a] College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China | [b] Institute of Fluid Science, Tohoku University, Sendai 980-8577, Japan

Correspondence: [*] Corresponding author: Tel./Fax: +86 25 84891123; E-mail: qiu@nuaa.edu.cn

Abstract: In this study, three types of BaTiO_{3} powders with different particle sizes synthesized by hydrothermal method were used to fabricate the lead-free barium titanate piezoelectric ceramics. The BaTiO_{3} ceramics from these three types of BaTiO_{3} powders were sintered at different temperature (1150–1350°C) using traditional sintering method, and their piezoelectric properties were investigated and compared. The results indicate that the BaTiO_{3} piezoelectric ceramics from BT03 powder exhibit highest d_{33} value (over 350 pC/N). The reasons were also investigated by comparing the properties of three kinds of BaTiO_{3} powders and their compacts sintered at different temperature.

Keywords: Barium titanate, hydrothermal method, lead-free, ceramics, piezoelectric property

DOI: 10.3233/JAE-2009-1041

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 31, no. 1, pp. 9-16, 2009