Research on the Synthesis and Conductivity of Titanium Oxycarbide

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In this study, TiCxOy was produced by sintering in an argon atmosphere using carbon–thermal reduction with TiO2 and graphite powder as the initial materials. The sintered TiCxOy was analyzed using X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. As the oxygen content increased, the grain color of the sintered TiCxOy gradually shifted from gray to reddish-brown. The structure of TiCxOy resembles that of a coral, with a uniform distribution of Ti, C, and O throughout the sample. Analysis using X-ray photoelectron spectroscopy reveals the presence of bivalent, trivalent, and tetravalent titanium. Utilizing General Structure Analysis System software (GSAS-II), the X-ray Diffraction data obtained were refined, revealing a gradual decrease in lattice parameters as the oxygen atom content increased. Furthermore, the conductivity and density of the single phase, determined through the four-probe method and the Archimedes method, respectively, exhibited an increase in tandem with the rise in C content.