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Synthesis and microstructure of partly-oriented bismuth layer structure ferroelectrics ceramics SrBi4Ti4O15

  • Hao Hua
  • Liu Hanxing
  • Ouyang Shixi
Article

Abstract

SrBi4Ti4O15 powder was synthesized by conventional solid state synthesis (CS) and molten salt synthesis (MSS). MSS method can synthesize plate-like SrBi4Ti4O15 at lower temperature (900°C) than CS method. Plate-like form becomes more distinct when the synthesis temperature increases. This would help cause the grain orientation of the ceramics after sintering. The sintered samples of MSS had grain orientation at (0,0,10) plane. The degree of (0,0,10) grain orientation F was 62.1%. Hot pressing made (0,0,10) grain orientation more distinct (F=85.7%). The microstructures of the sintered samples were detected by SEM. Due to the grain orientation, the density of samples fabricated by MSS was lower than that of prepared by CS.

Key words

molten salt synthesis bismuth layer structure ferroelectrics grain orientation hot pressing sinter 

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Copyright information

© Wuhan University of Technology 2005

Authors and Affiliations

  1. 1.School of Material Science and EngineeringWuhan University of TechnologyWuhan
  2. 2.Key Laboratory for Silicate Materials Science and Engineering, Wuhan University of TechnologyMinistry of EducationWuhan
  3. 3.State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan

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