High electrorheological effect in Bi1.8Fe1.2SbO7 suspensions
| Autor: | A. V. Egorysheva, O.M. Gajtko, Alexander V. Agafonov, Alexander E. Baranchikov, T. V. Kusova, Vladimir Ivanov, A. S. Kraev |
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| Rok vydání: | 2020 |
| Předmět: |
Filler (packaging)
Materials science General Chemical Engineering Dielectric permittivity Oxide 02 engineering and technology Conductivity 021001 nanoscience & nanotechnology Electrorheological fluid chemistry.chemical_compound 020401 chemical engineering chemistry Ultimate tensile strength Shear stress Dielectric loss 0204 chemical engineering Composite material 0210 nano-technology |
| Zdroj: | Powder Technology. 360:96-103 |
| ISSN: | 0032-5910 |
| Popis: | We report on the first experimental evidence of the electrorheological effect in suspensions of superfine pyrochlore-type Bi1.8Fe1.2SbO7 powders. Tensile-compressive and shear stress studies of the electrorheological fluids, with various filler contents, revealed an exceptionally high electrorheological effect in the materials – the tensile yield strength at 5 kV/mm reached about 20 kPa. The frequency dependencies of dielectric permittivity, dielectric loss tangent, and the conductivity of the suspensions with various filler contents allowed estimation of the dielectric permittivity values for superfine Bi1.8Fe1.2SbO7 particles at zero and infinite frequencies. The study reveals new oxide materials as promising fillers for electrorheological fluids. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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