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Synthesis of AlN nanowhiskers

Published online by Cambridge University Press:  31 January 2011

K.Y. Wang ,
P.G. Zhang ,
L.C. Zhang  and
S.M. Guo
K.Y. Wang
Affiliation:
CFAW-Ceramics LLC, Baton Rouge, Louisiana 70820
P.G. Zhang
Affiliation:
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803
L.C. Zhang
Affiliation:
Department of Chemical Materials and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269
S.M. Guo*
Affiliation:
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The synthesis of hexagonal aluminum nitride (AlN) nanoparticles and nanowhiskers by using direct nitridation of aluminum powders is presented in this work. After mixing aluminum powders with carbon and silica (derived from rice bran ashes) at a cryogenic temperature, the homogeneous mixture was heat treated/examined in a differential scanning calorimeter/tube furnace under N2 atmosphere. Under a maximum temperature of 1450 °C in N2 atmosphere, the as-milled aluminum-carbon-silica powder mixtures transformed completely into AlN nanoparticles and nanowhiskers with a trace of graphite. The formation mechanisms for AlN nanoparticles and nanowhiskers are discussed.

Keywords

NanostructureFiberMechanical alloying
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 9 , September 2010 , pp. 1771 - 1777
Copyright
Copyright © Materials Research Society 2010

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