Bulk dense nanocrystalline BaTiO3 ceramics prepared by novel pressureless two-step sintering method

In this paper, we investigate preparation of bulk dense nanocrystalline BaTiO 3 ceramics using an unconventional two-step sintering strategy, which offers the advantage of not having grain growth while increasing density from about 73 to above 99.6%. Isothermal and constant grain size sintering have...

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Bibliographic Details
Published in:Journal of electroceramics 2008-12, Vol.21 (1-4), p.230-233
Main Authors: Wang, X-H., Deng, X-Y., Zhou, H., Li, L-T, Chen, I-W.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Ceramics
Characterization and Evaluation of Materials
Chemical industry and chemicals
Chemistry and Materials Science
Composites
Crystallography and Scattering Methods
Electrochemistry
Electrotechnical and electronic ceramics
Exact sciences and technology
Glass
Grain growth
Grain size
Materials Science
Natural Materials
Optical and Electronic Materials
Technical ceramics
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Summary:In this paper, we investigate preparation of bulk dense nanocrystalline BaTiO 3 ceramics using an unconventional two-step sintering strategy, which offers the advantage of not having grain growth while increasing density from about 73 to above 99.6%. Isothermal and constant grain size sintering have been carried out to high density in pure BaTiO 3 system. The kinetics of this method is also discussed, which exploits the different kinetics between densification diffusion and grain boundary mobility. Using this method, bulk dense ceramics with a grain size of 8–10 nm was obtained successfully at a very low sintering temperature.
ISSN:1385-3449
1573-8663
DOI:10.1007/s10832-007-9143-1