Synthesis of Nanosized Titanium-Chromium Oxynitride Powders by Ammonolysis of Coprecipitated TiO2/Cr2O3 Precursors |
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Authors: | Yaogang Li Lian Gao |
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Affiliation: | State Key Lab of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China |
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Abstract: | Interstitial titanium-chromium oxynitrides in the solid solution series Ti1? z Cr z (O x N y ) ( z = 0.2, 0.4, 0.5, 0.6, 0.8) have been obtained by ammonolysis of the TiO2/Cr2O3 precursors resulting from the coprecipitation method. The precursors and the resulting oxynitrides were characterized by auger electron spectroscopy, X-ray diffraction analysis, electron probe microanalysis, transmission electron microscopy, and BET surface area techniques. Compounds in the Ti1? z Cr z (O x N y ) series are prepared as single phases by nitridation at 1073 K for 8 h. The as-synthesized oxynitride powders contain only Ti1? z Cr z (O x N y ) with cubic structure and the particle size is in the nanometer scale. |
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Keywords: | synthesis titanium chromium |
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