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Obtaining Of Materials-Hetters Based On Intermetallides By Electro-Pulse Sintering Of Titanium Sponge With Aluminum And Niobium Powders

  • : Vadim Savich1, Alexander Taraikovich1, Oleg Kuznechik1, Robert Golodok1
  • : 1Powder Metallurgy Institute
  • : PDF Download
  • : 2018

Abstract

It is proposed to use a titanium sponge as a basis for obtaining porous getter materials containing intermetallides of the Ti-Al-Nb system by electro-pulse sintering. Based on the analysis of the results of the structural-phase composition permeability strength and getter properties of the obtained samples it is found that they have a porosity in the range of 44-46% an average pore size in the range of 120-130 μm and a strength in the range of 120-125 MPa. A titanium-based batch with 27-28% aluminum content in it or 27-28% aluminum and 3.5-4.4% niobium after sintering is a titanium alloy in the first case as an α-phase and in the second - in a composition of α and β-phase with the inclusion of intermetallides of Ti3Al systems (28%) and TiAl (65%). It has been established that the introduction of an aluminum titanium sponge in an amount of 27-28% in a charge on the basis of a powder in comparison with a charge consisting only of a titanium sponge powder leads to an increase in the level of sorption and desorption in sintered materials by 1.8-2.0 times. The addition of additional niobium in amounts of 3.5-4.4% and 9.5-10.4% increases the same characteristics

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