论文信息 - Novel Way to Synthesize Nanocrystalline Aluminum Nitride from Coarse Aluminum Powder

Novel Way to Synthesize Nanocrystalline Aluminum Nitride from Coarse Aluminum Powder

A new process has been developed for the synthesis of nanocrystalline AIN powder by the nitridation of coarse aluminum powder in flowing NH 3 gas, using NH 4 Cl and KCI as additives. The resulting powders have been characterized using XRD, TEM, and XRF techniques. XRD-pure AIN nanoparticles with a diameter of 10-20 nm can be obtained by nitridation at 1273 K for 5 h. NH 3 is proved to eliminate the effect of water impurity. The effects of the additives on the conversion of aluminum are also discussed.

L. Gao | Y. Qiu

[1] Jiecai Han,et al. Effect of additives on self-propagating high-temperature synthesis of AlN , 2001 .

[2] S. Kanzaki,et al. Synthesis of aluminum nitride sintered bodies using the direct nitridation of Al compacts , 2000 .

[3] B. Vaidhyanathan,et al. Novel synthesis of nitride powders by microwave-assisted combustion , 2000 .

[4] M. Tsai,et al. Effect of heat treatment on phase transformation of aluminum nitride ultrafine powder prepared by chemical vapor deposition , 2000 .

[5] S. Risbud,et al. New Molecular Precursors from the Reaction of Hydrazine and Aluminum Alkoxide for the Synthesis of Powders in the Al−O−N System , 1997 .

[6] S. Pratsinis,et al. AEROSOL SYNTHESIS OF ALN BY NITRIDATION OF ALUMINUM VAPOR AND CLUSTERS , 1995 .

[7] S. Rhee,et al. Kinetics and mechanisms for nitridation of floating aluminum powder , 1995 .

[8] K. Komeya,et al. Synthesis of AlN by Direct Nitridation of Al Alloys , 1993 .

[9] G. Selvaduray,et al. Aluminium nitride: review of synthesis methods , 1993 .