Short Communication

Colloid and Polymer Science

, Volume 289, Issue 1, pp 79-83

Nano-sized Fe soft-magnetic particle and its magnetorheology

  • I. G. KimAffiliated withDepartment of Polymer Science and Engineering, Inha University
  • , K. H. SongAffiliated withDepartment of Polymer Science and Engineering, Inha University
  • , B. O. ParkAffiliated withDepartment of Polymer Science and Engineering, Inha University
  • , B. I. ChoiAffiliated withDepartment of Polymer Science and Engineering, Inha University
  • , Hyoung Jin ChoiAffiliated withDepartment of Polymer Science and Engineering, Inha University Email author 

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Abstract

As a new magnetoresponsive magnetorheological (MR) material under an applied magnetic field, magnetic Fe nanoparticles were synthesized from a simple process of thermal decomposition of pentacarbonyl iron using oleyl amine and kerosene at 150 °C. Morphology of the fabricated Fe nanoparticle was examined using both scanning electron microscopy and transmission electron microscopy. MR characteristics of the nano-sized magnetic particle-based MR fluid dispersed in non-magnetic carrier fluid was investigated using a rotational rheometer under different external magnetic field strengths, focusing on their flow behaviors at a steady shear mode and yield stress. Flow curve was also found to be fitted well with the Casson equation.

Keywords

Magnetic particle Magnetorheological fluid Nanoparticle