Dielectric properties of flash spark plasma sintered BaTiO3 and CaCu3Ti4O12

[摘要] Flash sintering is an approach allowing reducing the sintering time to mere seconds. To improve the microstructures and the properties of flash sintered specimens, this process has been successfully adapted to pressure assisted sintering such as the spark plasma sintering. This work is the exploration of the potential of this ultra-rapid sintering process for the improvement of the dielectric properties of well-known materials such as BaTiO3 and CaCu3Ti4O12. In particular, we focus on the potential improvement of the dielectric loss, colossal permittivity and microstructures of these materials after similar to 20 s sintering and annealing. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

[发布日期] 2019-12-01

[关键词] Flash spark plasma sintering;Barium titanate;CaCu3Ti4O12;Dielectric constant;Phase decomposition