Synthesis of ultrafine aluminium nitride powder by a low-temperature carbothermal reduction process

A new precursor containing a homogenous mixture of noncrystalline Al(2)O(3) and carbon was prepared with aluminium. nitrate, glucose and urea as raw materials, by a low-temperature combustion process. The nitridation of this precursor shows that it has a high reactivity and nitridation reaction proceeds rapidly. AIN powders with ultrafine particle sizes (similar to100nm) can be obtained at 1550degreesC within 90min.