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Preparation and electrorheological property of rare earth modified amorphous BaxSr1−xTiO3 gel electrorheological fluid by Qing Wu; Bin yuan Zhao; Le Sheng Chen; Chen Fang; Ke ao Hu is a Chemistry article available to read on EtoBox.

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In this paper, we present a newly developed rare earth modified amorphous barium strontium titanate (Ba(x)Sr(1-x)TiO3) gel/silicone oil electrorheological (ER) fluid. The ER behaviors of suspensions of pure and rare earth modified amorphous Ba(x)Sr(1-x)TiO3 particles in silicone oil have been investigated under a dc electric field. The shear yield stress of the rare earth modified amorphous BaTiO3 gel/silicone oil ER fluid could reach 14.9 kPa at E=3.5 kV/mm while the leaking current density was very low, about 7.64 microA/cm2. The ER fluids with a higher volume fraction had a higher current density and a higher shear yield stress under the same electric field. The ER fluid has a long-term stability against sedimentation. The problem of caking was not serious and the agglomerated particles could be easily broken up by strongly stirring.

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Author

Qing Wu; Bin yuan Zhao; Le Sheng Chen; Chen Fang; Ke ao Hu

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9797)

Published

2005

Language

EN

Field

Chemistry (Physical Sciences)