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Nano-Particulate of Aluminum Nitride Prepared by Pulsed Wire Discharge

Published online by Cambridge University Press:  17 March 2011

Yoshiaki Kinemuchi ,
Channarong Sangurai ,
Tsuneo Suzuki ,
Hisayuki Suematsu ,
Weihua Jiang  and
Kiyoshi Yatsui
Yoshiaki Kinemuchi
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, 940-2188, Japan
Channarong Sangurai
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, 940-2188, Japan
Tsuneo Suzuki
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, 940-2188, Japan
Hisayuki Suematsu
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, 940-2188, Japan
Weihua Jiang
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, 940-2188, Japan
Kiyoshi Yatsui
Affiliation:
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata, 940-2188, Japan
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Abstract

Nanoparticulates of aluminum nitride (AlN) have been synthesized by novel dry process, namely pulsed wire discharge where aluminum wire is exploded by an intense pulsed current (10-20 kA at the peak, half cycle of 10 μs) in NH3/N2 gas. The average size of the nanoparticulates was found to be 28 nm. Furthermore, narrow particle distribution of the particulates was observed, where geometric standard deviation was 1.29. Increasing charging energy enhances the nitridation of aluminum. The maximum content of AlN in synthesized particulates was ∼95 %. The sintered body with 80 % of density has been obtained by sintering at 1, 600°C for one hour.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 704: Symposium W – Nanoparticulate Materials , 2001 , W5.4.1
Copyright
Copyright © Materials Research Society 2002

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