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Structure of SHS-powders produced in Ti-Al-C-MoS2 System

  • : Alexander Ilyushchanka1, Andrew Letsko1, Tatiana Talako1
  • : 1Powder Metallurgy Institute
  • : PDF Download
  • : 2015

Abstract

The structure of the powders formed in the reaction mixture Ti-Al-C-MoS2 during self-propagating high-temperature synthesis has been investigated. TiC, TiAl and complex titanium and aluminum carbosulfides of Ti4C2S2 and Ti4Al2(C,S)2 type having a hexagonal crystal lattice of the same space group as molybdenum disulfide (P63/mmc) are identified in the powders. Increase of carbon content in the charge mixture results in higher carbide and carbosulfides relative content and lower intermetallics one. Typical reflexes of Al2Mo3C complex carbide can be also identified in the corresponding X-ray diffraction patterns. Microhardness of the SHS-powders mainly depends on the carbide concentration and varies in the range 4.5-8.5 GPa. The powders can be of interest for the development of antifriction materials.

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