Self-propagating high-temperature synthesis of an aluminum nitride nanopowder from a Na3AlF6 + 3NaN3 + nAl powder mixture

Abstract

Methods for producing aluminum nitride nanopowder were reviewed. It was shown that an azide technology of self-propagating high-temperature synthesis using sodium azide as a solid nitriding agent produces quite a cheap nano- and ultradispersed AlN powder by the combustion of a Na₃AlF₆–3NaN₃–nAl powder mixture. This AlN powder is of interest for electronics, light-emitting diode technology, and reinforcement of modification of aluminum alloy. A nanostructured aluminum nitride powder forms by the combustion of a Na₃AlF₆–3NaN₃. With increasing the aluminum content of the initial mixture, the aluminum nitride yield increases, but so does the average powder particle size.