Solid state metathesis routes to transition metal carbides

Abstract

Flame initiated (800 °C, 10 s) or bulk thermal (2 days, 1000 °C) reactions of mixed powders of transition metal halides and CaC₂ or Al₄C₃ produce transition metal carbides (TiC, ZrC, HfC, V₈C₇, NbC, TaC, Cr₃C₂, Mo₂C and WC) in good yields. The carbides were characterised by X-ray powder diffraction, SEM/EDX, FTIR, microelemental analysis, TEM, electron diffraction and ELNES.

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