Microwave plasma synthesis of nanostructured γ-Al2O3 powders

L. Fu; D. Lynn Johnson; Jian G. Zheng; Vinayak P. Dravid

doi:10.1111/j.1151-2916.2003.tb03532.x

Microwave plasma synthesis of nanostructured γ-Al₂O₃ powders

L. Fu, D. Lynn Johnson^*, Jian G. Zheng, Vinayak P. Dravid

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Nanostructured Al₂O₃ powders have been synthesized by combustion of aluminum powder in a microwave oxygen plasma, and characterized by X-ray diffraction and electron microscopy. The main phase is γ-Al₂O₃, with a small amount of δ-Al₂O₃. The particles are truncated octahedral in shape, with mean particle sizes of 21-24 nm. The effect of reaction chamber pressure on the phase composition and the particle size was studied. The γ-alumina content increases and the mean particle size decreases with decreasing pressure. No α-Al₂O₃ appears in the final particles. Electron microscopy studies find that a particle may contain more than one phase.

Original language	English (US)
Pages (from-to)	1635-1637
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	86
Issue number	9
DOIs	https://doi.org/10.1111/j.1151-2916.2003.tb03532.x
State	Published - Sep 2003

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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title = "Microwave plasma synthesis of nanostructured γ-Al2O3 powders",

abstract = "Nanostructured Al2O3 powders have been synthesized by combustion of aluminum powder in a microwave oxygen plasma, and characterized by X-ray diffraction and electron microscopy. The main phase is γ-Al2O3, with a small amount of δ-Al2O3. The particles are truncated octahedral in shape, with mean particle sizes of 21-24 nm. The effect of reaction chamber pressure on the phase composition and the particle size was studied. The γ-alumina content increases and the mean particle size decreases with decreasing pressure. No α-Al2O3 appears in the final particles. Electron microscopy studies find that a particle may contain more than one phase.",

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AU - Fu, L.

AU - Johnson, D. Lynn

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N2 - Nanostructured Al2O3 powders have been synthesized by combustion of aluminum powder in a microwave oxygen plasma, and characterized by X-ray diffraction and electron microscopy. The main phase is γ-Al2O3, with a small amount of δ-Al2O3. The particles are truncated octahedral in shape, with mean particle sizes of 21-24 nm. The effect of reaction chamber pressure on the phase composition and the particle size was studied. The γ-alumina content increases and the mean particle size decreases with decreasing pressure. No α-Al2O3 appears in the final particles. Electron microscopy studies find that a particle may contain more than one phase.

AB - Nanostructured Al2O3 powders have been synthesized by combustion of aluminum powder in a microwave oxygen plasma, and characterized by X-ray diffraction and electron microscopy. The main phase is γ-Al2O3, with a small amount of δ-Al2O3. The particles are truncated octahedral in shape, with mean particle sizes of 21-24 nm. The effect of reaction chamber pressure on the phase composition and the particle size was studied. The γ-alumina content increases and the mean particle size decreases with decreasing pressure. No α-Al2O3 appears in the final particles. Electron microscopy studies find that a particle may contain more than one phase.

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Microwave plasma synthesis of nanostructured γ-Al₂O₃ powders

Abstract

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