Synthesis and characterization of micrometric ceramic powders for electro-rheological fluids

Micrometric lamellar ceramic powders of the displacive ferroelectric oxide Bi 4Ti 3O 12 were synthesized by co-precipitation of bismuth nitrate and ammonia titanyl solutions followed by a heat treatment. It was found that a complete thermal decomposition is reached at 1000 °C. Structural and thermal...

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Bibliographic Details
Published inThe Journal of physics and chemistry of solids Vol. 64; no. 11; pp. 2157 - 2161
Main Authors Mendoza, M.E., Donado, F., Carrillo, J.L.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.2003
Subjects
A. Ceramics
B. Chemical synthesis
C. Thermogravimetric analysis
C. X-ray diffraction
B. Chemical synthesis
A. Ceramics
C. X-ray diffraction
C. Thermogravimetric analysis
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Summary:Micrometric lamellar ceramic powders of the displacive ferroelectric oxide Bi 4Ti 3O 12 were synthesized by co-precipitation of bismuth nitrate and ammonia titanyl solutions followed by a heat treatment. It was found that a complete thermal decomposition is reached at 1000 °C. Structural and thermal evolution of these ceramic powders were studied by X-ray diffraction, thermogravimetry and differential thermal analysis. The homogeneity in size and morphology of these ferroelectric particles are appropriate to prepare electro-rheological fluids. One of these fluids was prepared by dispersing the powders in silicone oil; the complex cluster structure formed by the particles, under an applied AC electric field, was observed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-3697
1879-2553
DOI:10.1016/S0022-3697(03)00210-5