Synthesis of Submicron AlON Powder by Wet Chemical Processing

The single-phase gamma-AlON powders were synthesized from three different precursors: gamma-Al2O3+C, Al(OH)(3)+C, NH4Al(OH)(2)CO3+C at 1750 degrees C by carbothermal reduction and nitridation. The effects of aluminium source and synthetic process conditions on the characteristic of gamma-AlON powders were investigated in order to optimize the preparation method. It was revealed that the wet chemical processing was helpful to reduce particle size. The median particle sizes (d(50)) of AlON powders synthesized from different precursors were 15.33 mu m, 2.886 mu m, 405.6 nm, respectively.