Abstract
The sedimentation caused by the high density of suspended particles used inmagnetorheological fluids is a significant obstacle for their wider application. In the presentpaper, core–shell structured carbonyl iron–polyaniline particles in silicone oil were used as amagnetorheological suspension with enhanced dispersion stability. Bare carbonyl ironparticles were suspended in silicone oil to create model magnetorheological suspensions ofdifferent loading. For a magnetorheological suspension of polyaniline-coated particles theresults show a decrease in the base viscosity. Moreover, the polyaniline coating hasa negligible influence on the MR properties under an external magnetic fieldB. The change in the viscoelastic properties of magnetorheological suspensions in thesmall-strain oscillatory shear flow as a function of the strain amplitude, the frequency andthe magnetic flux density was also investigated.
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