State Enterprise “international Center for Electron Beam Technologies of E.o. Paton Electric Welding Institute of National Academy of Sciences of Ukraine”

Iurii Kurapov

Boris E Paton

Boris Movchan

The inventive method for producing nanoparticles for ferrofluids by electron-beam evaporation and condensation in vacuum, consists in evaporating an initial solid material and in fixing nanoparticles to a cooled substrate by means of a solidifiable carrier during vapour condensation, wherein a solid inorganic material, which is selected from a group containing metals, alloys or oxides thereof, is used as an initial material and a solid liquid-soluble material is used as a magnetic carrier material for fixing nanoparticles. The method also consists in simultaneously evaporating the initial material and the carrier composition by electron-beam heating. The vapour is deposited on the substrate, the temperature which is lower than the melting point of the carrier material, and the condensate of the magnetic material nanoparticles, which have a size and are fixed in the carrier, is produced. The particle size is adjusted by setting the specified temperature of the substrate during vapour deposition.

Method for producing nanoparticles for magnetic fluids by electron-beam evaporation and condensation in vacuum, a magnetic fluid producing method and magnetic fluid produced according to said method

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Kyiv, Ukraine

Iurii Kurapov