Combustion Synthesis of Aluminum Nitride (AlN) Powders with Controlled Grain Morphologies

Combustion synthesis (CS) is a cost-effective method for the fabrication of aluminum nitride (AlN) powders. However, a morphology-controlled synthesis condition is still difficult to realize, which hinders the as-synthesized products for wide applications. In this chapter, we introduce and discuss the synthesis of one-dimensional (1D) AlN nanowhiskers, three-dimensional (3D) flower-like AlN microstructure, and AlN porous-shell hollow spheres with uniform morphologies by the CS process. The experimental results indicate that the morphologies of products can be controlled by manipulating the combustion parameters. Therefore, the CS of AlN with controlled grain morphologies can be achieved, which gives a chance to expand the application area of AlN ceramic.