Fabrication of Titanium Carbide Ceramics by High‐Pressure Self‐Combustion Sintering of Titanium Powder and Carbon Fiber

Abstract

Titanium carbide ceramics have been fabricated from the reactants titanium powder and carbon fiber by the highpressure self-combustion sintering method (HPCS) under two pressure conditions (65 MPa and 3 GPa). Porous Tic with a density of about 50% of theoretical was obtained under a pressure of 65 MPa. A possible model accounting for the formation mechanism of Tic is proposed on the basis of observation of the microstructure of the products formed from the incomplete reaction. On the other hand, dense Tic (>95% of theoretical) was fabricated under 3 GPa. The mean grain size varied, depending on the mixing molar ratio of the reactants. The influence of differences in the carbon (powder and fiber forms) on the structure of Tic compacts is discussed. [

Effect of reactant C/Ti ratio on the stoichiometry of Combustion-synthesized TiCx in Ti-C system

“…Adach et al, 6) on the other hand, obtained an appreciable amount of free carbon for the C/Ti ratio equaling 0.8 and 1.05 when the carbon fiber (7 μm in diameter and 0.2 mm in length) was used as the carbon source. As indicated, inconsistency exists in the previous studies regarding the dependence of the stoichiometry of TiCx on the reactant C/Ti ratio and moreover, the nature behind the apparent depending behavior has not yet been disclosed.…”

The effect of melting temperature and time on the TiC particles

“…On the other hand, TiC has a good hardness and a very high melting point [5]. Composite materials consisting of TiC and titanium aluminides are expected to find use in various structural, cutting tool and armor applications [6].…”

Application of the powder of porous titanium carbide ceramics to a reusable adsorbent for environmental pollutants

“…TiC ceramics is a sintered material formed by combustion synthesis method from titanium and carbon powder (Ti:C=1:1) at 3000 • C [19]. It was found that the material was porous by the SEM measurement ( Fig.…”

“…Our research group developed porous titanium carbide (TiC) ceramics [19]. The ceramics has been fabricated from the reactants of titanium powder and carbon fiber by the combustion synthesis method.…”