For the fabrication of functionally gradient materials (FGMs) composed of titanium carbide (TiC) and carbon (C), TiC-C composites in the C/(TiC+C) from 6 to 91 mol% were prepared by the chemical vapor deposition (CVD) using a TiCl₄-CH₄-H₂ system. The relation between microstructure and free carbon content in the TiC-C composites is necessary for the design of the TiC/C FGMs. Microstructure of the TiC-C composites was continuously changed from dense faceted to porous dome microstructure with increasing the pore volume in matrix accompanied with increasing the carbon content. The pore size was also changed from 10 nm to 10⁵ run with increasing of the pore volume in the TiC-C composites.