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Effects of Magnesium Catalyst on the Nitridation of Aluminum Melt in the Synthesis of Aluminum Nitride Powder
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  • Journal title : Applied Microscopy
  • Volume 44, Issue 2,  2014, pp.79-82
  • Publisher : Korean Society of Electron Microscopy
  • DOI : 10.9729/AM.2014.44.2.79
 Title & Authors
Effects of Magnesium Catalyst on the Nitridation of Aluminum Melt in the Synthesis of Aluminum Nitride Powder
Kim, Hyo-Jin; Kim, Sung-Hun; Lim, Sung-Min; Seo, Jong-Hyun; Lee, Kon-Bae; Lee, Jae-Chul; Ahn, Jae-Pyoung;
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Aluminum nitride (AlN) powder was easily synthesized by the direct nitridation of Al melt containing ~20 wt.% Mg catalyst and the nitriding behavior was investigated by thermodynamic calculation and through observations of electron microscopy and X-ray diffraction. The addition of Mg catalyst decreased the nitriding temperature below , which is comparable to the high nitriding temperature of required in carbothermal method. It was caused by a significant increase of the solubility of nitrogen gas due to the increase of Mg catalyst in Al melt. The dissolved nitrogen gas met Mg catalyst and was transformed into metastable . Finally the metastable phase reacted with Al to AlN.
AlN powder;Mg catalyst;Nitridation;
 Cited by
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