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On The Possibility Of Processing Composite Intermetallics Based Powders With Solid Lubricants

  • : Tatiana Talako1, Alexander Ilyuschenka1, Andrew Letsko1, Michael Andreev1
  • : 1Powder Metallurgy Institute
  • : PDF Download
  • : 2017


Structure and phase composition of powders based on nickel and iron aluminides with solid lubricants produced using exothermal effect of metals interaction have been investigated. In spite of relatively low exothermal effects of iron aluminides formation, intensive degradation of molybdenum and tungsten disulfide followed by formation of FeS2 и Al2S3 take place during the synthesis of iron aluminides based powders. When adding the carbon-containing solid lubricant, some content of carbon reacts with iron forming Fe3C carbide. No chemical interaction of metals with the investigated solid lubricants components was observed during the synthesis of nickel aluminide based powders. Disulfide inclusions are located both in periphery and in the volume of composite NiAl/MoS2 particles providing the finer volume distribution of solid lubricants as compared with two-step processing of tribotechnical compositions including the synthesis of intermetallics with the following admixing of solid lubricants


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