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Sintering and Dielectric Properties of Nano-BaTiO3 Powder Synthesized by High-Gravity Reactive Precipitation

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Abstract:

The dielectric properties and sintering activity of nano-BaTiO3 powders synthesized by HGRP method were investigated. The starting BaTiO3 powders were calcined at different temperatures from 700 to 900°C to improve their crystallinity and the mean particle size of BaTiO3 powders obtained increased from 40nm to 80nm. After being formed by conventional dry pressing the green bodies were sintered at 1100°C and 1200°C for 2hr in air. The effects of both calcinating and sintering temperatures on the sinterability, dielectric property and microstructure of BaTiO3 ceramics were discussed. The experimental results showed that the BaTiO3 powders have high sintering activity and the highest dielectric constant of this material at room temperature may reach 2880.

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Periodical:

Key Engineering Materials (Volumes 280-283)

Pages:

53-56

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.280-283.53

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Online since:

February 2007

Authors:

Xiao Lin Liu, Jing Qiang Zhang, Jian Feng Chen, Li Jie Gao, Shao Qing Wang

Keywords:

BaTiO3, Dielectric, High-Gravity Reactive Precipitation HGRP, Sintering

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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