Conferences

Refinement and Carburization of Titanium Powders under Electrical Discharge

O.N.Sizonenko,
  
É.I.Taftai,
 
A.D.Zaichenko,
 
E.V.Lipyan,
 
A.S.Torpakov,
 
A.A.Zhdanov,
 
N.S.Pristash
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2013, #05/06
http://www.materials.kiev.ua/article/931

Abstract

The effect of high-voltage electrical discharge in a titanium powder suspension in a hydro-carbon liquid on the refinement and formation of titanium carbide is studied. The dependence of the resulting superfine titanium carbide on the current density in the discharge channel is experi-mentally determined. The average diameter of powder particles after treatment with specific energy Wsp = 1.3 MJ/dm3 at various current densities in the discharge channel reduces from the starting size of ~1000 to <1 μm. The increase of current density in the channel from 0.08 to 0.56 kA/mm2 (with the same specific energy Wsp = 1.3 MJ/dm3) leads to an increase in the yield of titanium carbide from 32 up to 57%.


CURRENT DENSITY, HIGH-VOLTAGE ELECTRIC DISCHARGE, HYDROCARBON LIQUID, SPECIFIC ENERGY, SYNTHESIS, TITANIUM CARBIDE, X-RAY DIFFRACTION