SINTERABILITY OF CARBIDE-NITRIDE PHASES OF TITANIUM IN HIGH-PRESSURE CONDITIONS

Results of research in the field of sintering titanium carbonitride ph ases, its compactibility in high pressure (up to 8.0+/-0.2 GPa) and hi gh temperature (1700+/-50 K) conditions. Mixed powders of TiC, TiN, or mixed phases Ti(C,N) type were tested in the order of increasing nitr ogen content. All the samples reached density of 96-99% and their hard ness depends on the nitrogen content and on the structure of the sinte red powders. The applied sintering conditions did not cause any distin ct growth of the mean grain of the sintered compact, nor any lost of n itrogen content. Electron Microprobe Analysis and X-ray diffraction st udies proved, that with the above sintering parameters TiC and TiN par tial homogenizing process occurs; powders of carbonitride phases are l ess active.