Issues »  Volume 40, Issue 11

Electrospark Dispersion of Metal Materials. II. Influence of the Physicochemical and Kinetic Factors on a Particle Size Distribution

A. I. Ustinov$^{1}$, А. O. Perekos$^{2}$, S. M. Zakharchenkо$^{3}$, О. F. Bоytsоv$^{2}$, V. Z. Vоynаsh$^{2}$, V. P. Zalutsky$^{2}$

$^{1}$E. O. Paton Electric Welding Institute, NAS of Ukraine, 11 Kazymyr Malevych Str., UA-03150 Kyiv, Ukraine
$^{2}$G. V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
$^{3}$Institute of Electrodynamics, N.A.S. of Ukraine, 56 Peremohy Ave., UA-03057 Kyiv, Ukraine

Received: 19.01.2018. Download: PDF

The Al, Cu, Fe and Sn powders obtained by means of the method of electrospark dispersion in different dielectric mediums such as distilled water, ethanol, kerosene and glycerine are investigated. Influence of the physicochemical and kinetics factors on granulometric composition of powders is studied by optical granulometry method and x-ray analysis. As revealed, a particle size distribution depends on time of dispersion process, intermingling of working liquid, ultrasonic treatment of suspension, and mechanical treatment of powders. The physical parameters of working liquid and electrode material do not determine granulometric composition of powders; there is their influence on kinetics of a particles size rise during a fabrication process only. As shown, change of powder dispersion characteristics is determined by processes of agglomeration and aggregation of fine-grained particles in working liquid as well as factors influencing on these processes.

Key words: electrospark dispersion of metals, superfine particles, optical granulometry, x-ray analysis, particle size distribution.

URL: http://mfint.imp.kiev.ua/en/abstract/v40/i11/1539.html

DOI: https://doi.org/10.15407/mfint.40.11.1539

PACS: 52.80.Wq, 61.43.Gt, 62.23.St, 81.07.Wx, 81.20.-n, 83.50.Uv, 83.85.-c

Citation: A. I. Ustinov, А. O. Perekos, S. M. Zakharchenkо, О. F. Bоytsоv, V. Z. Vоynаsh, and V. P. Zalutsky, Electrospark Dispersion of Metal Materials. II. Influence of the Physicochemical and Kinetic Factors on a Particle Size Distribution, Metallofiz. Noveishie Tekhnol., 40, No. 11: 1539—1558 (2018) (in Russian)

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