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http://dx.doi.org/10.12925/jkocs.2012.29.1.8

Synthesis and Properties of Magnetite for Ferrofluid  

Baek, In-Ho (Department of Engineering Chemistry, College of Engineering Chungbuk National University)
Jeong, Noh-Hee (Department of Engineering Chemistry, College of Engineering Chungbuk National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.29, no.1, 2012 , pp. 63-70 More about this Journal
Abstract
Magnetite in the use of magnetic fluid seal was synthesized by coprecipitation method. Mean particle size of magnetite was measured about 12 nm by using dynamic light scattering(DLS). As a result of XRD test, along with the $NH_4OH$ concentration was increased, the crystallinity of magnetite was increased. The zeta potential of dispersed ferrofluid in water was measured in the range from -49.3 mV to -26.2 mV by DLS. The shape of magnetite particle was sphere form, and the spiking effect of aqueous and oily ferrofulid was confirmed.
Keywords
magnetite; ferrofluid; nanoparticle; mineral oil; zeta-potential;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 R. E. Rosensweig, Progeress in Ferrohydrodynamics, Ind. Res., 12(10), 36 (1970).
2 S. T. Papell, Low Viscosity Magnetic Fluid Obtained by the Colloidal Suspension of Magnetic Particles, U. S. Patent, 3215572 (1965).
3 T. O. Kim and S. M. Kim, Preparation and Characteristics of Magnetite Ferrofluid, J. Kor. Ceramic Soc., 27(1), 13 (1990).
4 C. J. Sambucetti, Magnetic Ink for Jet Printing, IEEE Transactions on Magnetics, MAG-16(2), 364 (1980).
5 B. D. Cullity, Elements of X-ray Diffraction, Addison Wesley Publishing Company, 99 (1978).
6 P. Berger, N. B. Adelman, K. J. Beckman, D. J. Campbell, A. B. Ellis, G., and C. Licensky, Preparation and Properties of an Aqueous Ferrofluid, J. Chem. Educa, 76(7), 943 (1999).
7 S. W. Charles and J. Popplewell, Progress in the Development of Ferromagnetic Liquids, IEEE Transactions on Magnetics, MAG-16 , 172 (1980).
8 O. H. Kim, H. B. Lee, M. K. Lee, J. H. Hong and Y. W. Kwak, Analysis of Heat Transfer of a Magnetic Fluid Seal, J. Kor. Soc. Mach. Tool. Eng., 19(3), 365 (2010).
9 I. Borbath, and Z. Kasco, Application of Magnetic Nanofluids in Rotation Seals, Convergence of Micro-and nanoengineering, 200(2006).
10 A. Hiroshi, Magnetic Fluid Seal, U. S. Patent, 6672592 B1, (2004).
11 G. W. Reimers and S. E. Khalafalla, Preparation of Dilution-Stable Aqueous Magnetic Fluid, IEEE Transaction on Magnetic, MAG-6(2), 178 (1980).
12 M. Kiyama, Condition for the Formation of $Fe_3O_4$ by the Air Oxidation of $Fe(OH)_2$ Suspensions, Bull. Chem, Sco. Jap., 47(7), 1646 (1974).
13 H. S. Kim and N. H. Jeong, Preparation of Nano AgBr Particles by Microemulsions, J. Kor. Oil Chem. Soc., 21(1), 17 (2004).
14 P. H. Refait and J. R. Genin, The oxidation of ferrous hydroxide in chloride containing aqueous media and pourbaix diagrams of green rust one, Corrosion Sci., 34(1), 797 (1993).
15 A. A. Olowe and J. M. R. Génin, The Influence of Concentration on the Oxidation of Ferrous Hydroxide in Acidic Sulphated Aqueous Medium: Particle Size Analysis of lepidocrocite, Corrosion Sci., 32(1), 1021 (1991).
16 H. S. Lee, Synthesis of Magnetite Nanoparticles by Microemulsion Method, J. Kor Inst. Res. Recyc, 9(5), 33 (2000).
17 N. H. Jeong and K. D. Nam, Synthesis of Nanoparticles by Microemulsion, J. Ind. Sci. Tech. Inst., 17(1), 87 (2003).