Electro-Rheological Properties of Transformer Oil-Based Magnetic Fluids

• Authors: K. Paulovičová , J. Tóthová , M. Rajňák , M. Timko , P. Kopčanský , V. Lisý
• Languages of publication: EN

Abstracts

EN

The aim of this work was to study rheological behavior of nanofluids affected by electric field and temperature. We used transformer oil-based magnetic fluids, the suspensions of permanently magnetized colloidal particles (Fe_3O_4) coated by a stabilizing surfactant and immersed in transformer oil. The rheological characterization of transformer oil-based magnetic fluid was performed using the rotational rheometer MCR 502 in the shear rate from 10 to 1000 s¯¹.The strength of electric field was changed in the interval 0-6 kV cm¯¹. The flow curves and viscosity functions detected at three different temperatures 25, 50, and 75°C disclose rheological characteristics of samples, first of all the viscosity growth under increasing strength of electric field.

Keywords

EN

07.55.Jg; 75.50.Mm; 83.85.Jn; 83.60.Np

Discipline

• 83.60.Np: Effects of electric and magnetic fields
• 83.85.Jn: Viscosity measurements
• 75.50.Mm: Magnetic liquids
• 07.55.Jg: Magnetometers for susceptibility, magnetic moment, and magnetization measurements

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 1141-1143

Dates

published

2017-04

Contributors

author

K. Paulovičová

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia

author

J. Tóthová

• Department of Physics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia

author

M. Rajňák

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia

author

M. Timko

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia

author

P. Kopčanský

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia

author

V. Lisý

• Department of Physics, Technical University of Košice, Park Komenského 2, 042 00 Košice, Slovakia
• Laboratory of Radiation Biology, Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia

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Identifiers

DOI

10.12693/APhysPolA.131.1141