Facile synthesis of hexagonal boron nitride fibers with uniform morphology

Hexagonal boron nitride (h-BN) fibers were synthesized via the polymeric precursor method using boric acid (H3BO3) and melamine (C3H6N6) as raw materials. The precursor fibers were synthesized by a water bath and BN fibers were prepared from the precursor at 1600 degrees C for 3 h in Rowing nitrogen atmosphere. The products were characterized by X-ray powder diffraction, Fourier transformation infrared spectroscopy, theimogravimetry and scanning electron microscopy. The results showed that h-BN fibers with uniform morphology were successfully fabricated. The well-synthesized fibers were 1-2 mu m in diameter and 200-500 mu m in length. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.