Characterisation of pellets and beams from barium titanate perovskite granulates

Journal of Material Sciences & Engineering

ISSN: 2169-0022

Open Access

Characterisation of pellets and beams from barium titanate perovskite granulates

2nd International Conference and Expo on Ceramics & Composite Materials

July 25-26, 2016 Berlin, Germany

M Gromada, M Biglar, F Stachowicz and T Trzepiecinski

Institute of Power Engineering, Poland
Rzeszow University of Technology, Poland

Scientific Tracks Abstracts: J Material Sci Eng

Abstract :

The main aim of this investigation is to manufacture the barium titanate powder by solid state, fabricate the barium titanate granulate material and finally sintered material in order to verify if this material can be successful utilised for manufacturing the general part of the stacked-disk multilayer actuators. The pellets were performed by spilling the mould for uniaxial pressing of the external diameter of 11.5 mm with BaTiO3 granulate of the weight of 0.6 g and uniaxial pressing under the pressure of 1 MPa. It was found that the values of water absorbability and the apparent porosity grow together with the maximal sintering temperature. To determine the grain size of sintered materials, photos of SEM microstructure of barium titanate after sintering were prepared. The microstructure is composed of both great grains of the dimension from 50 to 100 ?¼m and smaller one of the dimension from 1 to 3 ?¼m. The grains boundaries are very well foreshadowed and the only slender pores can be noticed in the photos. Although, in this approach the obtained microstructure of sinters is very similar to this presented in literature by other authors, in order to receive better result of the barium titanate dielectric constant, the microstructure of sinter must be improved in the direction of the smaller grains getting. In order to verify whether the special designed sintering curves brought the expected grains size of sintered material at high relative density, photos of microstructure and stage of densification were determined and the results were discussed.

Biography :

Mojtaba Biglar is a PhD student at the Rzeszow University of Technology


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