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Synthesis of vanadium carbide by mechanical alloying

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Volume
392
Identifiers
DOI: 10.1016/j.jallcom.2004.09.018
Keywords
  • Mechanical Alloying
  • Self-Sustained Reaction
  • Vcx
  • V8C7

Abstract

Abstract Vanadium carbide was synthesized by ball milling V 2O 5, Mg and graphite powders at room temperature using a planetary ball mill. Characterization of the structural evolution during milling was carried out using X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). Experimental results indicate that the formation of vanadium carbide is a self-sustained reaction. The as-produced VC x ( x < 1) has the same structure as VC. When VC x was annealed at a temperature higher than about 750 °C, it transforms into V 8C 7. The formation mechanism of vanadium carbide is discussed.

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