Synthesis of highly dispersed vanadium diboride with the use of nanofibrous carbon

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Reduction of vanadium(III) oxide with boron carbide and nanofibrous carbon in an induction furnace in argon was used to obtain a highly dispersed vanadium diboride powder. The characteristics of vanadium diboride powders were studied by various analytical methods. It was found that the material obtained contains only a single phase, vanadium diboride, with powder particles mostly aggregated, the average size of particles and aggregates being 9.8 μm at a wide particle size distribution. The optimal synthesis parameters were determined: V₂O₃: B₄C: C ratio corresponding to the stoichiometry, temperature 1700°C, and keeping time 20 min.