Morphology-controlled synthesis of quasi-aligned AIN nanowhiskers by combustion method: Effect of NH4Cl additive (original) (raw)

Uniform quasi-aligned AlN nanowhiskers grown in the reacting Al particles have been successfully prepared in high content by combustion synthesis using NH 4 Cl as a morphology-controlled promoting additive. FE-SEM and TEM images show that the nanowhiskers, which are singlecrystalline hexagonal wurtzite AlN growing along [0 0 1] direction, have diameters in the range of 80-170 nm and a length of several to several tens of micrometers. The effect of NH 4 Cl on the growth of nanowhiskers was discussed. It was found that NH 4 Cl not only controlled the products' morphology, but also changed the combustion behavior and nitridation mechanism in the combustion synthesis process. #