The enhanced magnetorheological performance of carbonyl iron suspensions using magnetic Fe3O4/ZHS hybrid composite sheets

Abstract

Two-dimensional magnetic Fe3O4/ZHS hybrid composite sheets were prepared via a two-step microwave-assisted solvothermal synthesis. The successful incorporation of Fe3O4 nanoparticles synthesized in the first step into a zinc hydroxysulfate (ZHS) sheet-like structure formed during the second synthesis step was confirmed by X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometry. The obtained magnetic Fe3O4/ZHS hybrid composite particles show a hexagonal and sheet-like morphology. The addition of these sheet-like hybrid composite particles into magnetorheological carbonyl iron-based suspensions results in a significant increase in MR performance. Moreover, this addition considerably contributes to the redispersibility enhancement of prepared suspensions in comparison to those consisting only of bare carbonyl iron particles. This journal is