Conferences

Production and structural features of Ti-N-B and Ti-N-C nanocomposites

 
I.Timofeeva,
 
L.Klochkov,
  
L. P.Isaeva,
 
V. S.Urbanovich,
 
M. M.Ristic
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2008, #01/02
http://www.materials.kiev.ua/article/686

Abstract

The paper examines the high-pressure sintering of nanocrystalline ceramic polycrystals based on TiN-TiB2 and TiC0,5N0,5 refractory compounds. Using the optimum pressure (up to 4 GPa) allows keeping the initial nanostate (TiN-TiB2 and TiC0,5 N0,5) and obtaining high- density ceramics with enhanced mechanical properties. An x-ray structural analysis is used to examine how the TiN -TiB2 and TiC0,5 N0,5 crystalline structure evolves during thermal- baric treatment, which produces new ceramic materials. Based on the properties of the poly-crystalline materials obtained, the temperature-time mode for the consolidation of initial nanopowders is determined to ensure favorable parameters of sintered nanograined ceram- ics.


HIGH PRESSURE, NANOCERAMICS, REFRACTORY COMPOUNDS, SINTERING