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Preparation and Characterization of Nanosized Al2O3 Particles Synthesized by the thermal MOCVD and Plasma CVD

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Abstract:

In this paper, nano-sized Al2O3 powders are synthesized by a thermal MOCVD (Metal Organic Chemical Vapor Deposition) combined with plasma. The effect of reaction temperature on the characteristics of the synthesized Al2O3 powders is investigated. The experimental results demonstrate that while the temperature is increased from 200oC to 1000oC, the mean diameter of Al2O3 powders reaches from 400nm to 10nm. Hence, the increment of temperature can promote the synthesis of fine Al2O3 particle. Furthermore, the powder morphologies and crystallite size are also examined by the transmission electron microscopy (TEM) and XRD. Based on TEM observation, it is found that the particles are sphere shape. The XRD analysis shows that the particles are typical γ-Al2O3 crystalline phase over 400oC. Lastly, the effect of plasma on the characteristic of Al2O3 synthesized by thermal MOCVD is also considered.

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Periodical:

Key Engineering Materials (Volumes 321-323)

Pages:

1683-1686

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.321-323.1683

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Online since:

October 2006

Authors:

Hee Joon Kim, Se Woong Oh, Hiroyuki Noda, Ho Jung Chang, Lae Hyun Kim

Keywords:

Al2O3, Nanopowder, Particle Size Control, Plasma MOVCD, Thermal MOCVD, Trimethyl Aluminum (TMA)

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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