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 MSA  Vol.7 No.5 , May 2016
Obtaining at High Pressure the TiN-TiB2 Ceramic Nano-Composite
Abstract:

The process of consolidation of TiN nanopowders under a hydrostatic pressure of 3 GPa was evaluated from the evolution of substructure parameters of compacts obtained after different exposure of powder bodies under constant pressure at room temperature. It has been established that in compaction, changes in the substructure reflect deformation processes of the porous body, which are accompanied by relaxation processes and the corresponding decrease in microstresses. The sintering of consolidated 80 wt% TiN - 20 wt% TiB2 powders at 3 GPa in the temperature range 1300 - 1600 leads to the substitution of N atoms by B atoms in TiN and possibly to the substitution of B atoms by N atoms in TiB2. The presence of oxygen in powders promotes the formation of titanium oxynitride, which increases the microhardness of specimens.

Cite this paper: Bykov, A. , Vlasova, M. , Aguilar, P. and Kakazey, M. (2016) Obtaining at High Pressure the TiN-TiB2 Ceramic Nano-Composite. Materials Sciences and Applications, 7, 232-237. doi: 10.4236/msa.2016.75023.
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