Some mechanisms concerning the electrical conductivity of magnetorheological suspensions in magnetic field

Oana-Elena Andrei; Ioan Bica

Journal of Industrial and Engineering Chemistry, Vol.15, No.4, 573-577, July, 2009

DOI10.1016/j.jiec.2009.01.015 Export Citation

Some mechanisms concerning the electrical conductivity of magnetorheological suspensions in magnetic field

Oana-Elena Andrei, and Ioan Bica^†

Faculty of Physics, West University of Timisoara, Bd. V. Parvan, No. 4, 300223 Timisoara, Romania

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Iron carbonyl is decomposed, at the temperature of 473 K ± 10%, into a liquid matrix formed of silicone oil and stearic acid. For 3.703% and 1.886% stearic acid, magnetorheological suspensions (MRSs) are obtained. The iron particles in MRSs have the mean diameter of 0.356 μm. Magnetoresistors are achieved from MRSs with the dimensions of diameter and length equal to 5 mm. In longitudinal magnetic field, the resistance of the magnetoresistors is measured. Assimilating the resistance of the magnetoresistors with that of a linear resistor, the conductivity s of MRS is determined. The duration tc of onset of s is determined. It is observed that t(c) is considerably influenced by the intensity of the magnetic field applied and by the composition of MRSs. Experimental data are discussed, too.

Keywords:Magnetorheological suspensions (MRSs);Magnetoresistor;Electro-conductivity;Friction coefficient;Magnetic field

[References]

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Bica I, J. Ind. Eng. Chem., 12(4), 501 (2006)
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Choi HJ, Bica I, Int. J. Mod. Phys. B, 22, 5048 (2008)
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Forte P, Paterno M, Rustighi E, Int. J. Rotating Mach., 10, 175 (2004)
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Bica I, J. Ind. Eng. Chem., 12(4), 620 (2006)
Bica I, J. Ind. Eng. Chem., 13(2), 299 (2007)
Bica I, J. Magn. Magn. Mater., 283, 335 (2004)
Bica I, Phys. B, 371, 145 (2006)
Bica I, J. Ind. Eng. Chem., 12(5), 806 (2006)
Bica I, Smart Mater. Struct., 15, N147 (2006)
Bica I, J. Ind. Eng. Chem., 15(3), 304 (2009)
Melle S, PhD Thesis, Ciudad Universitaria, Madrid (2002)
Jones TB, Electromechanics of Particles, Cambridge University Press, Cambridge (1995)
Cho MS, Lim ST, Jang IB, Choi HJ, Jhon MS, IEEE Trans. Magn., 40, 30365 (2005)
Jang IB, Kim HB, You JL, Choi HJ, J. Appl. Phys., 97, Q912 (2005)

[Referenced By]

[1] Lim ST, Choi HJ, Jhon MS, IEEE Trans. Magn., 41, 3745 (2005)

[2] Lim ST, Cho MS, Choi HJ, Int. J. Mod. Phys. B, 19, 1142 (2005)

[3] Bica I, J. Ind. Eng. Chem., 12(4), 501 (2006)

[4] Wu WP, Zhao BY, Wu Q, Chen LS, Hu KA, Smart Mater. Struct., 15, N94 (2006)

[5] Choi HJ, Bica I, Int. J. Mod. Phys. B, 22, 5048 (2008)

[6] Kordonsky WI, J. Magn. Magn. Mater., 122, 395 (1999)

[7] Choi SB, Lee SK, Park YP, J. Sound Vib., 245, 375 (2001)

[8] See H, Mackenzie S, Chua BT, Korea-Aust. Rheol. J., 18(3), 121 (2006)

[9] Bica I, J. Magn. Magn. Mater., 241, 196 (2002)

[10] Bica I, J. Magn. Magn. Mater., 270, 321 (2004)

[11] Choi YT, Wereley NM, Int. J. Mod. Phys. B, 19, 1584 (2005)

[12] Forte P, Paterno M, Rustighi E, Int. J. Rotating Mach., 10, 175 (2004)

[13] Flores GA, Liu J, Eur. Cells Mater. 2 (3 Suppl.), 9 (2002)

[14] Bica I, J. Ind. Eng. Chem., 12(4), 620 (2006)

[15] Bica I, J. Ind. Eng. Chem., 13(2), 299 (2007)

[16] Bica I, J. Magn. Magn. Mater., 283, 335 (2004)

[17] Bica I, Phys. B, 371, 145 (2006)

[18] Bica I, J. Ind. Eng. Chem., 12(5), 806 (2006)

[19] Bica I, Smart Mater. Struct., 15, N147 (2006)

[20] Bica I, J. Ind. Eng. Chem., 15(3), 304 (2009)

[21] Melle S, PhD Thesis, Ciudad Universitaria, Madrid (2002)

[22] Jones TB, Electromechanics of Particles, Cambridge University Press, Cambridge (1995)

[23] Cho MS, Lim ST, Jang IB, Choi HJ, Jhon MS, IEEE Trans. Magn., 40, 30365 (2005)

[24] Jang IB, Kim HB, You JL, Choi HJ, J. Appl. Phys., 97, Q912 (2005)