Patent ID: 7217403
Filing Date: 2007-05-15
Classification: C01B,C01P

Abstract:
1. A method for synthesizing aluminum nitride, said method comprising: preparing a reactant-containing body, wherein said reactant-containing body comprises a first aluminum powder; preparing an igniting agent, said igniting agent comprising an azide powder; placing said igniting agent on an ignition zone which is located on top of one end of said reactant-containing body, wherein said azide powder is excluded in other zones of said reactant-containing body; placing said reactant-containing body in a reaction chamber; vacuuming said reaction chamber; introducing nitrogen gas into said reaction chamber, thereby increasing the pressure in said reaction chamber to a first predetermined pressure; igniting said igniting agent in said ignition zone; and further introducing nitrogen gas into said reaction chamber after ignition, so as to increase the pressure in said reaction chamber to a second predetermined pressure for performing a combustion synthesis process to produce said aluminum nitride, wherein said second predetermined preasure is greater than said first predetermined pressure.