High electrorheological effect in Bi1.8Fe1.2SbO7 suspensions A. V. Egorysheva, A. S. Kraev, O. M. Gajtko [et al.]
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ArticleContent type: Текст Media type: электронный Subject(s): наночастицы | пирохлор | висмута оксида комплекс | диэлектрические свойства | электрореологический эффектGenre/Form: статьи в журналах Online resources: Click here to access online
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Powder Technology Vol. 360. P. 96-103Abstract: 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.
Библиогр.: 45 назв.
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.
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