Patent ID: 6423287
Filing Date: 2002-07-23
Classification: C01B

Abstract:
A method for production of aluminum nitride comprises:(a) preparing reactant mixture from aluminum powder and a compound additive selected from the group consisting of urea (CO(NH2)2)2), NH2CO2NH4, ammonium carbonate ((NH4)2CO3), NH4HCO3, HCOONH4, N2H4HCl, N2H4HBr, N2H4.2HCl, aluminum chloride (AlCl3), and aluminum bromide (AlBr3) wherein the compound additive is thermally decomposed or vaporized below the melting point of aluminum; (b) placing the reactant mixture in nitrogen environment; and (c) heating the mixture in nitrogen environment to produce aluminum nitride by combustion reaction.