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Effect of High-Voltage Electric Discharge on the Particle Size of Hard-Alloy Powders

O.N.Sizonenko,
 
G.Bagliuk,
 
A.Raychenko,
 
G.P.Bogatyreva,
 
N.A.Oleinik,
 
É.I.Taftai,
 
E.V.Lipyan,
 
A.S.Torpakov
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #11/12
http://www.materials.kiev.ua/article/1688

Abstract

The effect of high-voltage electric discharge treatment of Fe–20% TiC and VK6–1% ASUD75 diamond powder mixtures on their particle size and morphology is examined. It is shown that high-voltage electric discharge treatment in a powder suspension permits substantial refinement in the particle size and increase in the shape factor and specific surface. A near-linear dependence is established between the total treatment energy and powder particle size. It is shown that hydrocarbon liquid is much more efficient than water as a fluid medium.


DISPERSIVITY, ELECTRIC DISCHARGE, GRINDING, POWDER, SUSPENSION

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