Effect of synthesis conditions on properties of barium titanate piezoelectric ceramics

TL;DR

This study investigates how synthesis and processing conditions affect the properties of barium titanate ceramics, focusing on parameters influencing their use in multilayer actuators.

Contribution

It identifies four previously unreported sintering parameters that impact barium titanate's suitability for actuator applications.

Findings

Monophase BaTiO3 achieved through double mechanical activation and calcination.

Granulation improves mouldability of BaTiO3 powder.

Four key sintering parameters affecting actuator performance were identified.

Abstract

The powder of barium titanate (BaTiO3) synthesized by solid state was characterised by spherical grains of the average size about 500 nm. The double mechanical activation and calcination of raw materials was necessary to receive the monophase material. In order to improve the mouldability, the obtained barium titanate powder was granulated in spray drier. Pellets and beams from BaTiO3 granulate were manufactured by both uniaxial and isostatic pressing. The properties of barium titanate material at each stage of its fabrication (powder, granulate, sintered material) influencing on its application for the stacked-disk multilayer actuator were determined. Particularly, the four parameters of BaTiO3 sinter affecting on the usability properties of actuators, not found before in the literature, were estimated.