Experimental Study Of Mr Suspensions Of Carbonyl Iron Powders With Different Particle Sizes

dc.creatorBombard A.J.F.
dc.creatorAlcantara M.R.
dc.creatorKnobel M.
dc.creatorVolpe P.L.O.
dc.date2005
dc.date2015-06-26T14:07:12Z
dc.date2015-11-26T15:41:30Z
dc.date2015-06-26T14:07:12Z
dc.date2015-11-26T15:41:30Z
dc.date.accessioned2018-03-28T22:49:59Z
dc.date.available2018-03-28T22:49:59Z
dc.identifier
dc.identifierInternational Journal Of Modern Physics B. , v. 19, n. 7-9, p. 1332 - 1338, 2005.
dc.identifier2179792
dc.identifier10.1142/S0217979205030268
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-20944449053&partnerID=40&md5=17a8d8ff6f6bd03be4c8a7f444bb3ede
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/93298
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/93298
dc.identifier2-s2.0-20944449053
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1264630
dc.descriptionMagnetorheological suspensions (MRS) based on mixtures of two commercial carbonyl iron powders (BASF grades CL and SU) as magnetic phase and hydrocarbon oil as liquid phase were prepared. CL and SU are both soft magnetic powders, but CL is a coarse powder, while SU is a fine one. The total mass fraction of iron was 80% w/w each formulation. Hydrophilic fumed silica (5% w/w of Aerosil® 200) was used to reduce the settling. The mixing ratios were: CL 0%, CL 20%, CL 40%, CL 60%, CL 80% and CL 100%. A MRS, the mixture CL 80%, showed considerable reduction of the plastic viscosity without field, in the range of 100-500 s -1, when compared to the MRS with just one powder. The yield stress values under applied field H ∼ 340 kA/m were: 18.1 kPa for the MRS CL 0%, 18.3 kPa for the MRS's CL 20% and CL 40%, 20.0 kPa for the MRS CL 60%, 22.3 kPa for the MRS CL 80% and 23.3 kPa for the MRS CL 100%, respectively. For comparison, a sample of commercial MRF-132LD (Lord Corp.) in the same conditions showed yield value of 21.2 ± 0.6 kPa. On the other hand, another MRS, CL 60%, showed an increment of ∼ 33% on the normal force, with relation to the MRS prepared with just CL or just SU powders, above 150 kA/m. Therefore, mixing carbonyl iron powders with different particle sizes can improve the performance of MRS, decreasing the 'off plastic viscosity, and increasing the MR effect. © World Scientific Publishing Company.
dc.description19
dc.description7-9
dc.description1332
dc.description1338
dc.descriptionFarris, R.J., Prediction of the Viscosity of Multimodal Suspensions from Unimodal Viscosity Data (1968) Trans. Soc. Rheol., 12 (2), pp. 281-301
dc.descriptionHe, D., Ekere, N.N., Viscosity of concentrated noncolloidal bidisperse suspensions (2001) Rheol. Acta, 40, pp. 591-598
dc.descriptionOta, M., Miyamoto, T., Optimum particle size distribution of an electrorheological fluid (1994) J. Appl. Phys., 76 (9), pp. 5528-5532
dc.descriptionWang, Z.W., Lin, Z.F., Tao, R.B., Influence of the size distribution on the viscous property of an electrorheological fluid (1997) Chin. Phys. Lett., 14 (2), pp. 151-154
dc.descriptionTan, Z.J., Zou, X.W., Zhang, W.B., Jin, Z.Z., Influences of the size and dielectric properties of particles on electrorheological response (1999) Phys. Rev. E, 59 (3), pp. 3177-3181
dc.descriptionFoister, R.T., Magnetorheological fluids, US Patent 5,667,715 - Sep. 16, 1997Weiss, K.D., Carlson, J.D., Nixon, D.A., Method and MRF formulations for increasing the output of a MRF, US Patent 6,027,664 - Feb. 22, 2000Lim, S.T., Cho, M.S., Jang, I.B., Choi, H.J., (2004) J. Mag. Mag. Mat., 282, pp. 170-173
dc.descriptionMezger, T.G., (2002) The Rheology Handbook, pp. 33-40. , Vincentz Verlag, Hannover
dc.descriptionWollny, K., Läuger, J., Huck, S., Magneto-sweep - A new method for characterizing the viscoelastic properties of MR fluids (2002) Applied Rheol., 12 (1), pp. 25-31
dc.descriptionLemaire, E., Meunier, A., Bossis, G., Liu, J., Felt, D., Bashtovoi, P., Matoussevitch, N., Influence of the particle size on the rheology of magnetorheological fluids (1995) J. Rheol., 39 (5), pp. 1011-1020
dc.descriptionWu, C.W., Conrad, H., Influence of mixed particle size on electrorheological response (1998) J. Appl. Phys., 83 (7), pp. 3880-3884
dc.descriptionSee, H., Kawai, A., Ikazaki, F., The effect of mixing particles of different size on the electrorheological response under steady shear flow (2002) Rheol. Acta, 41, pp. 55-60
dc.languageen
dc.publisher
dc.relationInternational Journal of Modern Physics B
dc.rightsfechado
dc.sourceScopus
dc.titleExperimental Study Of Mr Suspensions Of Carbonyl Iron Powders With Different Particle Sizes
dc.typeActas de congresos


Este ítem pertenece a la siguiente institución