【摘 要】
：
A simple and fast method of preparation of vanadium carbide (V8C7) nanopowders using mechanical alloying assisted microwave heating method was demonstrated. The micron-sized V2O5 and nano-sized carbon black were used as starting materials. The as-prepared
【机 构】
：
School of Material Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
A simple and fast method of preparation of vanadium carbide (V8C7) nanopowders using mechanical alloying assisted microwave heating method was demonstrated. The micron-sized V2O5 and nano-sized carbon black were used as starting materials. The as-prepared powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric and differential scanning calorimetry (TG-DSC), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) techniques. The experimental results show that the V8C7 powders can be obtained by microwave heating at 1100 ℃ for 1 h (34wt％ C). The synthesized powders show good dispersion and are mainly composed of spherical or near-spherical particles with a mean diameter of about 30 nm. The XPS spectra show that the surface of the specimen mainly consists of V, C, and O three species elements.
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