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Formation Concentrated Stream Pulsed Plasma And Lasers Nanocrystalline Structure In The Surface Of Sintered Titanium Powder Porous Samples

  • : Vadim Savich1, Michail Andreev1, Oleg Kuznechik1, Alexander Taraikovich1, Robert Golodok1
  • : 1Powder Metallurgy Institute
  • : PDF Download
  • : 2017

Abstract

SEM and metallography techniques studied surface layer of spongy sintered titanium powder porous samples at baseline and after treatment with the concentrated plasma flow and laser. It is found that on the outer surface and inside the pore channels formed cermet layers samples thickness after pulsed plasma treatment to 20 microns in pore and channel 300 microns on the outer surface of the sample, and after the pulsed laser - 1.2 microns, respectively, and 10.5 microns. Thus these layers are available to activate the metal phase and the ceramic-metal layers adjacent to the metal phase have a structure closer to an amorphous nanocrystalline. Formation of a composite structure can improve the stability to thermal and mechanical stress, resistance to bolshinstovu alkalis, acids (except hydrofluoric, concentrated sulfuric and phosphoric) and in salt solutions (except generators fluoride base), including such a reducing agent as carbon monoxide.

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