Synthesis and Characterization of the Nanocrystalline Ti_0.8Cr_0.2O_xN_y Powder

Nanocrystalline bimetallic metal oxynitride, Ti0.8Cr0.2OxNy, was synthesized by am-monolysis of the nanosized Cr2O3/TiO2 composite powder at 800℃ for 8h. The precursor and the resulting oxynitride were characterized by Auger electron spectroscope (AES), X-ray diffraction analysis (XRD), electron probe microanalysis (EPMA), transmission electron microscopy (TEM), and BET surface area techniques. The results indicate that the as-synthesized oxynitride powder contains only Ti0.8Cr0.2OxNy, with cubic structure and its average particle size is 20-30nm, its specific surface area reaches 46.74m2/g.