Additive effect of rod-like magnetite/sepiolite composite particles on magnetorheology

Rod-like magnetite/sepiolite nanocomposite particles were fabricated using a chemical co-precipitation process and introduced as an added ingredient in a carbonyl iron (CI)-based magnetorhological fluid (MRF). The morphologies of the composite particles and CI-magnetite/sepiolite mixture were observed by scanning electron microscopy. Two types of MRFs with and without magnetite/sepiolite additive were fabricated, and their MR behaviors and sedimentation stability were investigated using a rotation rheometer and an optical analyzer system of Turbiscan, respectively. The results showed that the addition of rod-like magnetite/sepiolite additives enhanced both the dispersion and MR properties of CI-based MRF, making its potential application more promising. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

Automated summary

Rod-like magnetite/sepiolite nanocomposite particles were fabricated using a chemical co-precipitation process and introduced into a carbonyl iron-based magnetorheological fluid. The addition of these additives improved the dispersion and magnetorheological properties of the carbonyl iron-based MR fluid, showing promise for potential applications.