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Preparation of stable magnetorheological fluids based on extremely bimodal iron–magnetite suspensions

  • M.T. López-López (a1), J. de Vicente (a1), G. Bossis (a2), F. González-Caballero (a1) and J.D.G. Durán (a1)...

Abstract

The high magneto-viscous response of magnetorheological fluids (MRFs) comes from the large size (≈1 μm) of the magnetic particles dispersed in the carrier liquid. Unfortunately, in the absence of a magnetic field, this large size constitutes the origin of some problems facing the technological applications of MRFs. These problems are (i) the instability of the suspensions caused by the fast settling of the high density magnetic particles used, and (ii) the poor redispersibility due to an irreversible aggregation. In this work, we used an electromagnetic induction method to study the stability of MRFs containing micron-sized iron particles dispersed in ferrofluids composed by oleate-covered magnetite nanoparticles dispersed in kerosene. Interestingly, we demonstrated that the sedimentation rate in iron/ferrofluid suspensions can be significantly lower than in iron/kerosene MRFs.

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a)Address all correspondence to this author.e-mail: jdgarcia@ugr.es

References

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1.Phulé, P.P. and Ginder, J.M.: The materials science of field-responsive fluids. MRS Bull. 23(8), 19 (1998).
2.Charles, S.W.: The preparation of magnetic fluids, in Ferrofluids, edited by Odenbach, S. (Springer, Bremen, Germany, 2002), pp. 69.
3.Rosensweig, R.E.: Magnetic fluids. Sci. Am. 247, 136 (1982).
4.Rosensweig, R.E.: Magnetic fluids. Ann. Rev. Fluid Mech. 19, 437 (1987).
5.Rosensweig, R.E.: An introduction to ferrohydrodynamics. Chem. Eng. Commun. 67, 1 (1988).
6.Odenbach, S.: Ferrofluids—Magnetically controlled suspensions. Colloid Surface A 217, 171 (2003).
7.Ginder, J.M.: Behavior of magnetorheological fluids. MRS Bull. 23, 26 (1998).
8.Bossis, G., Volkova, O., Lacis, S. and Meunier, A.: Magnetorheology: fluids, structures, and rheology, in Ferrofluids, edited by Odenbach, S. (Springer, Bremen, Germany, 2002), p. 202.
9.Ginder, J.M.: Rheology controlled by magnetic fields. Encyclopedia of Applied Physics 16, 487 (1996).
10.de Vicente, J., López-López, M.T., González-Caballero, F. and Durán, J.D.G.: Rheological study of the stabilization of magnetizable colloidal suspensions by addition of silica nanoparticles. J. Rheol. 47, 1093 (2003).
11.Volkova, O., Bossis, G., Guyot, M., Bashtovoi, V. and Reks, A.: Magnetorheology of magnetic holes compared to magnetic particles. J. Rheol. 44, 91 (2000).
12.Dang, A., Ooi, L., Fales, J. and Strove, P.: Yield stress measurements of magnetorheological fluids in tubes. Ind. Eng. Chem. Res. 39, 2269 (2000).
13.van Ewijk, G.A., Vroege, G.J. and Philipse, A.P.: Convenient preparation methods for magnetic colloids. J. Magn. Magn. Mater. 201, 31 (1999).
14.Chen, Z.Y., Tang, X., Zhang, G.C., Jin, Y., Ni, W., and Zhu, Y.R.: In Electro-Rheological Fluids, Magneto-Rheological Suspensions and Their Applications, edited by Nakano, M. and Koyama, K. (Proc. 6th Int. Conference on Electro-rheological Fluids, Magneto-rheological, Suspensions, and their Applications, Singapore, 1998), p. 486.
15.Chin, B.D., Park, J.H., Kwon, M.H. and Park, O.O.: Rheological properties and dispersion stability of magnetorheological (MR) suspensions. Rheol. Acta 40, 211 (2001).
16.Rankin, P.J., Horvath, A.T. and Klingenberg, D.J.: Magnetorheology in viscoplastic media. Rheol. Acta 38, 471 (1999).
17.Park, J.H., Chin, B.D. and Park, O.O.: Rheological properties and stabilization of magnetorheological fluids in a water-in-oil emulsion. J. Colloid Interface Sci. 240, 349 (2001).
18.Phulé, P.P., Mihalcin, M.T. and Gene, S.: The role of the dispersed-phase remnant magnetization on the redispersibility of magnetorheological fluids. J. Mater. Res. 14, 3037 (1999).
19.Shimada, K., Akagami, Y., Fujita, T., Miyazaki, T., Kamiyama, S. and Shibayama, A.: Characteristics of magnetic compound fluid (MCF) in a rotating rheometer. J. Magn. Magn. Mater. 252, 235 (2002).
20.Shimada, K., Shuchi, S., Fujita, T., Miyazaki, T., Shibayama, A. and Kamiyama, S.: Newly improved magnetic compound fluid (MCF) for more stability of particle dispersion. Int. J. Appl. Electron. 19, 351 (2004).
21.López-López, M.T., Durán, J.D.G., Delgado, A.V., González-Caballero, F.: Stability and magnetic characterization of oleate-covered magnetite ferrofluids in different non-polar carriers. J. Colloid Interf. Sci. 2005 , submitted.
22.de Vicente, J., Bossis, G., Lacis, S. and Guyot, M.: Permeability measurements in cobalt ferrite and carbonyl iron powders and suspensions. J. Magn. Magn. Mater. 251, 100 (2002).
23.van Ewijk, G.A., Vroege, G.J. and Kuipers, B.W.M.: Phase behavior of magnetic colloid-polymer mixtures: 2. A magnetic sensing coil study. Langmuir 13, 382 (2002).
24.Garnett, J.C.M.: Colours in metal phases and in metallic films. Philos. Trans. R. Soc. London 203, 385 (1904).
25.Reitz, J.R., Milford, F.J. and Christy, R.W.: Foundations of Electromagnetic Theory, 4th ed. (Addison-Wesley, Reading, MA, 1993), pp. 253270.
26.de Gans, B.J.: Magnetorheology of an invere ferrofluid. Ph.D. Thesis, University of Twente, Utrecht, The Netherlands (2000).
27.Shimada, K., Akagama, Y., Kamiyama, S., Fujita, T., Miyazadi, T. and Shibayama, A.: New microscopic polishing with magnetic compound fluid (MCF). J. Intell. Mater. Syst. Struct. 13, 405 (2002).

Keywords

Preparation of stable magnetorheological fluids based on extremely bimodal iron–magnetite suspensions

  • M.T. López-López (a1), J. de Vicente (a1), G. Bossis (a2), F. González-Caballero (a1) and J.D.G. Durán (a1)...

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