A reduction-boronation route to nanocrystalline titanium diboride

摘要

Nanocrystalline titanium diboride (TiB2) has been prepared through a reduction-boronation route by using Ti powders and BBr3 as titanium and boron sources, and metallic sodium as reductant at 400 T. X-ray powder diffraction (XRD) pattern can be indexed as hexagonal TiB2 with the lattice constants of a = 3.028 and c = 3.223 Angstrom. Transmission electron microscopy images show particle morphology with average size of 15 nm. Selected area electron diffraction patterns confirm the preparation of the hexagonal TiB2. (C) 2004 Elsevier Ltd. All rights reserved. [References: 14]