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

Abstract

The paper examines the high-pressure sintering of nanocrystalline ceramic polycrystals based on TiN-TiB₂ and TiC_0,5N_0,5 refractory compounds. Using the optimum pressure (up to 4 GPa) allows keeping the initial nanostate (TiN-TiB₂ and TiC_0,5 N_0,5) and obtaining high- density ceramics with enhanced mechanical properties. An x-ray structural analysis is used to examine how the TiN -TiB₂ and TiC_0,5 N_0,5 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.