ALUMINUM NITRIDE NANOPOWDERS PREPARED BY USING MELAMINE AND THE FABRICATION METHOD THEREOF

摘要

Aluminum nitride nanopowders prepared by adding melamine and a preparation method of the aluminum nitride nanopowders are provided to synthesize aluminum nitride nanopowders which are more efficient in solving non-economic efficiencies such as high reaction temperatures and long reaction times that are problems of an existing synthetic method. A preparation method of an aluminum nitride nanopowder comprises: a first step of mixing a boehmite(AlOOH) powder, a carbon-containing powder, and a powder containing carbon and nitrogen; a second step of charging the mixed powder into a furnace; a third step of primarily heating the furnace under a hydrogen gas or nitrogen-containing gas atmosphere, thereby decomposing the boehmite powder to form aluminum oxide(Al2O3) that is reducible at low temperatures as an intermediate; and a fourth step of secondly heating the furnace at a temperature higher than that in the first heating process under an ammonia gas or nitrogen gas atmosphere, thereby reacting the intermediate with a carbon component and a nitrogen component to reduce the intermediate and nitride aluminum at the same time. The preparation method further comprises the step of maintaining temperature of the resulting material at a final process temperature for 1 to 5 hours after performing the second heating process of the fourth step. Further, a mixing ratio of the boehmite(AlOOH) powder, the powder containing carbon and nitrogen and the carbon-containing powder is 1.00:0.36:0.20 to 1.00:5.35:3.00.