Synthesis of AlN Particles by Microwave-Assisted Urea Route

Publisher: Trans Tech Publications

E-ISSN: 1662-7482|2016|851|191-195

ISSN: 1660-9336

Source: Applied Mechanics and Materials, Vol.2016, Iss.851, 2016-10, pp. : 191-195

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Abstract

Novel simple route to prepare AlN nanoparticles was proposed in this study. Aluminum nitride powder was synthesized by microwave-assisted urea route. Aluminum chloride was dissolved in ethanol and urea was added to this solution considering molar concentration with Aluminum chloride. The solution was heated under microwave (MW) irradiation from 60°C to 80°C for 5-10 minutes. And then heat treatment was performed in N2 atmosphere with various temperatures and time to obtain AlN particles. While microwave was irradiated to the mixed solution with Aluminum chloride, urea and ethanol, the solvent was eliminated and polymerization reaction was accelerated to formmetal-organic complex. AlN particles were successfully synthesized after heat treatment above 1600°C under N2 or N2-H2 mixed gas atmosphere in the molar ratio (urea/Aluminum chloride) of 6.