Synthesis and characterization of micrometric ceramic powders for electro-rheological fluids |
| |
Authors: | M.E. Mendoza F. Donado J.L. Carrillo |
| |
Abstract: | Micrometric lamellar ceramic powders of the displacive ferroelectric oxide Bi4Ti3O12 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. |
| |
Keywords: | A. Ceramics B. Chemical synthesis C. Thermogravimetric analysis C. X-ray diffraction |
本文献已被 ScienceDirect 等数据库收录! |