Synthesis and characterization of high-purity aluminum nitride nanopowder by RF induction thermal plasma

High-purity aluminum nitride nanopowder was synthesized using the RF induction thermal plasma technique. The nitrogen gas flow rate, plasma power and reactor pressure were controlled to increase the conversion rate of Al powder to AlN nanoparticles. The compositions of the obtained powders were inve...

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Bibliographic Details
Published in:Ceramics international 2014-07, Vol.40 (6), p.8117-8123
Main Authors: Kim, Kyung-In, Choi, Sung-Churl, Kim, Jin-Ho, Cho, Woo-Seok, Hwang, Kwang-Taek, Han, Kyu-Sung
Format: Article
Language:English
Subjects:
Aluminium nitride
Aluminum
Aluminum nitride
Band structure of solids
Ceramics
Conversion
Nanoparticles
Nanopowder
Nanostructure
Nitrogen atmosphere
RF induction thermal plasma
Thermal plasmas
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Summary:High-purity aluminum nitride nanopowder was synthesized using the RF induction thermal plasma technique. The nitrogen gas flow rate, plasma power and reactor pressure were controlled to increase the conversion rate of Al powder to AlN nanoparticles. The compositions of the obtained powders were investigated through XRD and EDS analysis. The synthesized aluminum nitride nanoparticles included polygonal and rod-shaped nanoparticles and ultra-fine particles below 10nm. The particle sizes generally ranged from 20–60nm in TEM analysis. The specific surface area, band structure and impurities of aluminum nitride nanoparticles were also evaluated by BET, FTIR and ICP-OES analysis.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2014.01.006