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2002•Journal of Inorganic MaterialsRequires access

Preparation of Ultrafine Bi_4Ti_3O_(12) Powder by Coprecipitation Methods

Kan Yan

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Abstract

Ultrafine Bi4 Ti3O12 powder was prepared by a coprecipitation method and its phase evolution process and sintering behavior were investigated. The results show that the synthetic temperature of Bi4 Ti3O12 is lowered significantly due to homogeneous mixing of Ti and Bi com- ponents in the precursor mixture, and phase pure Bi4Ti3O12 powder can be produced after aging at 600 ℃ . The powder obtained consists of irregular-shaped particles of about 100nm and is nearly aggregate free. Dense Bi4Ti3O12 ceramics can be prepared at a considerably low temperature of 950 ℃ , indicating the high sinterability of the powder.

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What this paper is about

Ultrafine Bi4 Ti3O12 powder was prepared by a coprecipitation method and its phase evolution process and sintering behavior were investigated. The results show that the synthetic temperature of Bi4 Ti3O12 is lowered significantly due to homogeneous mixing of Ti and Bi com- ponents in the precursor mixture, and phase pure Bi4Ti3O12 powder can be produced after aging at 600 ℃ . The powder obtained consists of irregular-shaped particles of about 100nm and is nearly aggregate free. Dense Bi4Ti3O12 ceramics can be prepared at a considerably low temperature of 950 ℃ , indicating the high sinterability of the powder.

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Available abstract

Ultrafine Bi4 Ti3O12 powder was prepared by a coprecipitation method and its phase evolution process and sintering behavior were investigated. The results show that the synthetic temperature of Bi4 Ti3O12 is lowered significantly due to homogeneous mixing of Ti and Bi com- ponents in the precursor mixture, and phase pure Bi4Ti3O12 powder can be produced after aging at 600 ℃ . The powder obtained consists of irregular-shaped particles of about 100nm and is nearly aggregate free. Dense Bi4Ti3O12 ceramics can be prepared at a considerably low temperature of 950 ℃ , indicating the high sinterability of the powder.

Key concepts: Coprecipitation, Materials science, Sintering, Mixing (physics), Phase (matter), Ceramic, Chemical engineering, Homogeneous

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