Influence of Nano-Fe₃O₄ Addition on the Stability of Magnetorheological Fluid

Abstract:

Based on the uniformity of magnetic field in shear circle, low magnetic field, and inconvenient of injecting magnetorheological fluid (MRF), the rotational parallel disk instrument for measuring the shear stress of MRF made by ourselves was improved. The magnetic circuit of the instrument was optimized using Ansys software, the parts and structure of leaking magnetic field were improved, and the uniformity of the magnetic field in shear circle plates was strengthen; when the current was 1.65A, the average magnetic field in shear circle plates was 0.9T. Then the influence on MRF by using different mass fractions of nano-Fe₃O₄ was researched, which indicate when the ration between the mass of nano-Fe₃O₄ and that of carbonyl iron particles is 5%, the characteristic of MRF is best.

• Periodical: Advanced Materials Research (Volumes 261-263)
• Pages: 529-532
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.261-263.529
• Online since: May 2011
• Authors: Hong Liang Cuan, Xiao Mei Luo, Shi Quan Liu
• Keywords: Magnetorheological Fluid (MRF), Nano-Fe₃O₄, Shear Stress

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