Research Center for Engineering of
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Title: Rheological and magnetorheological behaviour of some magnetic fluids on polar and nonpolar carrier liquids
Published In: International Journal of Modern Physics B, Vol. 16, No. 17-18, pp. 2765-2771
Description: Rheological and magnetorheological behaviour of monolayer and double layer sterically stabilized magnetic fluids, with transformer oil (UTR), diloctilsebacate (DOS), heptanol (Hept), pentanol (Pent) and water (W) as carrier liquids, were investigated. The data for volumic concentration dependence of dynamic viscosity of high colloidal stability UTR, DOS, Hept and Pent samples are particularly well fitted by the formulas given by Vand (1948) and Chow (1994). The Chow type dependence proved its universal character as the viscosity data for dilution series of various magnetic fluids are well fitted by the same curve, regardless the nonpolar or polar charcater of the sample. The magnetorheological effect measured for low and medium concentration water based magnetic fluids is much higher, due to agglomerate formation process, than the corresponding values obtained for the well stabilized UTR, DOS, Hept and Pent samples, even at very high volumic fraction of magnetic nanoparticles.
ISSN:ISSN: 0217-9792
DOI:DOI: 10.1142/S0217979202012967
Publication year: 2002
Keywords:Rheological behaviour, magnetorheological behaviour
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Authors: MARINICA (BALAU) Oana , BICA Doina , KONERACKA Martina , KOPCANSKY Peter , SUSAN-RESIGA (GHEORGHE) Daniela , VEKAS Ladislau ,
Type: International Journal Article
Laboratory: Rheology Laboratory
Institution: UPT