Synthesis and stability of Ti-C/nano-cer amies composites

摘要

In this paper the phase stability of compacted Ti-C/ ceramic nanoadditives composites was investigated. A mixture of elemental Ti and Graphite powders with a range of ceramic nanoaddives of each Al2O3 and CuO was sintered at 1100 °C; the phase growth was then assessed. X-ray diffraction (XRD) has been used to identify the resultant phases at different nano additives percentage and different various pressures. Differential thermal analysis (DTA) was also used to examine the phase evolution during sintering. The results show that TiC is the most stable phase when no additives have been added. TiO2 is found to be the widely prevalent oxide in the case of Ti-C/ nano Al2O3 and also for Ti-C/ nano CuO mixture. In the case of Ti-C/ nano CuO, it is suggested to have two stage of reaction where Cu2O appears to be formed first at 650-700 °C.