7. Tribology of Intelligent Magnetorheological Materials

Magneto rheological (MR) fluid are categorized as one of smart materials, where the viscosity of the fluid enhances significantly under the influence of applied magnetic field. The fluids are set up by scattering micron scale magnetic particles into a fluid media called as carrier fluid with added substances for improving the rheological characteristics of fluid. The fundamental element of these fluid is the capacity to undergo change from fluidized state to semisolid state under controllable yield stress within couple of milliseconds in the wake of externally activated magnetic field. Lower magneto rheological impact and sedimentation of particles in MR fluids are the most challenging topics against the broad applications of MR fluid revolution in current ventures. Different techniques have been proposed and utilized by analysts to enhance the magneto rheological impact and stability of these liquids against the sedimentation. The primary focal point of this brief is to show a thorough survey on various strategies for synthesis and reduction in sedimentation rate of MR fluids. Besides, rheological models and use of MR liquids are talked about along this compilation.