Open AccessThe research of thermal capacity of submicrocrystalline powder materials on the basis of nickel aluminide
Author(s) -
V. P. Levin
Publication year - 2007
Publication title -
izvestiâ mgtu "mami"
Language(s) - English
Resource type - Journals
eISSN - 2949-1428
pISSN - 2074-0530
DOI - 10.17816/2074-0530-69688
Subject(s) - inert gas , materials science , aluminide , inert , nickel , condensation , nickel aluminide , chemical engineering , metallurgy , thermal , phase (matter) , composite material , chemistry , organic chemistry , intermetallic , thermodynamics , physics , alloy , nial , engineering
The paper examines the influence of compacting pressure on the thermal capacity of macrocrystalline and submicrocrystalline powder composition on the basis of nickel aluminide in the wide range of temperatures. It was found that the compacting pressure in the large-dispersed powder mixtures Ni50 Al50 actuates inttermetallides Ni2Al3, NiAl3 according liquid-phase mechanisms at Т ~ 0,85 Tпл, and in fine-dispersed powder mixtures it intensifies the generation of intermetallides according to the solid-phase reaction mechanisms at Т ~ 0,77 Tпл. The obtained results may be used for the analysis of physical and mechanical features of nano-materials, obtained from by gas condensation in the inert atmosphere.