Synthesis of (Ti,W, Mo,V)(C,N) nanocomposite powder from novel precursors |
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Authors: | Yongzhong Jin Ying Liu Yankun Wang Jinwen Ye |
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Affiliation: | 1. School of Materials Science and Engineering, Sichuan University, Chengdu 610065, China;2. Department of Materials and Chemistry Engineering, Sichuan University of Science and Engineering, Zigong 643000, China |
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Abstract: | (Ti, W, Mo, V)(C, N) nanocomposite powders with globular-like particle of ∼10–100 nm were synthesized by a novel method, namely carbothermal reduction–nitridation (CRN) of complex oxide–carbon mixture, which was made initially from salt solution containing titanium, tungsten, molybdenum, vanadium and carbon elements by air drying and subsequent calcining at 300 °C for 0.5 h. Phase composition of reaction products was discussed by X-ray diffraction (XRD), and microstructure of the calcined powders and final products was studied by scanning electron microscopy (SEM) and transmission electron microscope (TEM), respectively. The results show that the synthesizing temperature of (Ti, W, Mo, V)(C, N) powders was reduced greatly by the novel precursor method. Thus, the preparation of (Ti, 15W, 5Mo, 0.2V)(C, N) is at only 1200 °C for 2 h. The lowering of synthesizing temperature is mainly due to the homogeneous chemical composition of the complex oxide–carbon mixture and its unusual honeycombed structure. |
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Keywords: | Composite materials Chemical synthesis X-ray diffraction Scanning electron microscopy Transmission electron microscopy |
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