Effects of Kaolinite addition on the densification and dielectric properties of BaTiO3 ceramics

Microstructures and dielectric properties of Ba0.4Sr0.6TiO3 ceramics with BaO–TiO2–SiO2 glass–ceramics addition

“…The liquid phases located at triple joints evenly wrap around the grains and formed a continuous liquid network. Appropriate liquid content promoted the dissolution-precipitation process and the grain growth, which always decreased the sintering temperature and improved the densification of ceramics [11]. Fig.…”

“…3). Thus, solid particles were fully wetted by liquid phase, which resulted in the decrease of sintering temperature [7][8][9][10][11]. In the rest of this paper, all the samples were prepared at their SSTs.…”

“…Besides a high E b , a large variation of polarization is another key factor, which is related to the dielectric constant to a certain extent [5]. Considering the two factors, the addition of glasses to BST ceramics has widely been investigated for achieving high energy density recently [7][8][9][10][11][12][13][14][15][16].…”

“…Among various systems of glasses, B 2 O 3 -SiO 2 -based glasses, such as BaO-B 2 O 3 -SiO 2 , SrO-B 2 O 3 -SiO 2 , CaO-B 2 O 3 -SiO 2 [8][9][10][11][12], possess higher breakdown strength and well wetting with BST ceramics, which should be effective additives in improving the energy storage density of BST ceramics. However, the dielectric constant of BST ceramics with glass additives was decreased, the dielectric properties of BST ceramics deterioration evidently.…”