Synthesis and morphology control of nanocrystalline boron nitride

摘要

Nanocrystalline boron nitride (BN) with needle-like and hollow spherical morphology has been synthesized by nitriding of MgB2 with NH4Cl and NH4Cl-NaN3, respectively. The amount of NaN3 has an obvious effect on the size of the hollow spheres. The samples were characterized by X-ray powder diffraction, Fourier transformation infrared spectroscopy. X-ray photoelectron spectra, and transmission electron microscopy. The possible mechanism of morphology control is also discussed. (C) 2003 Published by Elsevier Inc. [References: 20]