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Title: POSSIBILITY EVALUATION OF USING COLLOID-DISPERSED SYSTEMS BASED ON MAGNETITE AS AN ELECTRIC CURRENT SOURCE
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POSSIBILITY EVALUATION OF USING COLLOID-DISPERSED SYSTEMS BASED ON MAGNETITE AS AN ELECTRIC CURRENT SOURCE
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1314-2704
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English
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20
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4.1
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The ability of a moving charge to create a vortex magnetic field around itself is well known. This phenomenon formed the basis for the creation of electromagnets. The reverse process is electromagnetic induction, when a magnet moving with acceleration becomes a source of electric current in a closed conducting circuit. In this regard, ferromagnetic fluids are of some interest. Ferromagnetic fluid is an aggregatively stable colloidal system consisting of nanosized particles of a dispersed phase uniformly distributed in a dispersion medium. Thus, ferrofluid can be considered as a set of nanoscale magnets freely moving in a carrier fluid.
In this paper, we consider the possibility of obtaining magnetic fluid from natural magnetite and its use as a source of electric current under forced mechanical external influence (vibration). In the course of laboratory experiments, a finely divided fraction of magnetite was obtained through its mechanical activation at the Retsch PM100 planetary ball mill. An alcohol base (ethanol) was used as the carrier fluid. The resulting suspension was placed in a plastic cylinder with a diameter of 20 mm and a height of 40 mm, around which a coil of insulated copper wire with a diameter of 0.38 mm was formed. This cell was connected to a milliammeter for measuring electric current and placed on a vibration platform. It is noted that after the start of the oscillatory movements of the vibration platform, the milliammeter showed the presence of alternating current in the system. In the continuation of the research, it was found that at a given dispersion degree of the dispersed phase substance, the magnitude of the electric signal depends on the magnetite concentration, geometric dimensions of the cell, and the intensity of the external mechanical action. |
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conference
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20th International Multidisciplinary Scientific GeoConference SGEM 2020
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20th International Multidisciplinary Scientific GeoConference SGEM 2020, 18 - 24 August, 2020
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; C
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145-152
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18 - 24 August, 2020
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website
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cdrom
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7225
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magnetite nanoparticles; colloid-disperse system; electric current
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