Nanostructured TiC–TiB2 composites obtained by adding carbon nanotubes into the self-propagating high-temperature synthesis process

Combustion Synthesis of UHTC Composites from Ti–B4C Solid State Reaction with Addition of VIb Transition Metals

“…Of particular interest for this study is the TiB 2 -TiC composite, because not only is it an outstanding UHTC [18,19], but it can also be produced through the SHS scheme with Ti and B 4 C as the precursors [20][21][22][23][24][25]. The SHS process allows in situ synthesis of multi-phase materials, as in the case of TiB 2 -TiC composites.…”

“…By combining a thermite reagent of CrO 3 + 2Al into the 3Ti + B 4 C reaction system, Huang et al [24] obtained TiB 2 -TiC composites through combustion synthesis under an ultra-high gravity field which improved microstructure refinement, relative density, fracture toughness, and bending strength of the final products. Combustion synthesis of the TiC-rich composites with TiB 2 :TiC = 1:2 and 1:4 was carried out in the Ti-B 4 C-C reaction system [20,25]. Deorsola et al [25] adopted carbon nanotubes in partial substitution for graphite in the sample of 6Ti + B 4 C + 3C to facilitate the formation of nanostructured TiB 2 -TiC composite powders.…”

“…Combustion synthesis of the TiC-rich composites with TiB 2 :TiC = 1:2 and 1:4 was carried out in the Ti-B 4 C-C reaction system [20,25]. Deorsola et al [25] adopted carbon nanotubes in partial substitution for graphite in the sample of 6Ti + B 4 C + 3C to facilitate the formation of nanostructured TiB 2 -TiC composite powders.…”

Effect of Ni content on microstructures and mechanical properties of hot-pressed TiC–TiB2–Ni composite

“…Wang et al prepared TiB 2 /TiC composites with a relative density of 98.2% via mechanical alloying and subsequent pressureless sintering at 1750°C [13]. Deorsola et al prepared nanostructured TiC-TiB 2 using selfpropagating high-temperature synthesis by adding carbon nanotubes and demonstrated the content of carbon nanotubes was 1.5 mol% the specimen showed the optimum mechanical properties [22]. Gotman et al tried to synthesize TiC-TiB 2 composite using B 4 C-Ti raw powders by hot pressing method, however full conversion of reagents into products has not been achieved [23].…”

Self-propagating high-temperature synthesis of nano-TiC x particles with different shapes by using carbon nano-tube as C source

“…In contrast to them, carbon nano-tube (CNT) has much finer size, usually 5 to 20 nm in diameter. In fact, CNT has been used to synthesize the nanostructured TiC-TiB 2 [ 17 ] and carbide nanofibers [ 18 ] during the SHS.…”