CVD synthesis of Al2O3 nanotubular structures using a powder source

Si Jung Park, Doo Jin Choi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Alumina (Al2O3) 1D nanotubular structures were synthesized by chemical vapor deposition (CVD) using aluminum (Al) and Al 2O3 powder sources at a temperature of 1300 °C and a pressure of 100 Pa. At present, no research has been published regarding the synthesis of α-phase Al2O3 nanotubes using only a powder source. In this work, we attempted to grow α-phase Al 2O3 nanotubes without catalysts. As-deposited nanotubular structures had an irregular and ragged surface morphology that was related to the boundary layer thickness. Moreover, complementary nanotubular structures can be obtained via an annealing process. A model to describe the irregular nanotubular structure formation was suggested, and the effect of the boundary layer thickness was demonstrated in our experimental conditions.

Original languageEnglish
Pages (from-to)7923-7929
Number of pages7
JournalCeramics International
Volume40
Issue number6
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Aluminum
Powders
Chemical vapor deposition
Nanotubes
Boundary layers
Aluminum Oxide
Surface morphology
Alumina
Annealing
Catalysts
Temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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abstract = "Alumina (Al2O3) 1D nanotubular structures were synthesized by chemical vapor deposition (CVD) using aluminum (Al) and Al 2O3 powder sources at a temperature of 1300 °C and a pressure of 100 Pa. At present, no research has been published regarding the synthesis of α-phase Al2O3 nanotubes using only a powder source. In this work, we attempted to grow α-phase Al 2O3 nanotubes without catalysts. As-deposited nanotubular structures had an irregular and ragged surface morphology that was related to the boundary layer thickness. Moreover, complementary nanotubular structures can be obtained via an annealing process. A model to describe the irregular nanotubular structure formation was suggested, and the effect of the boundary layer thickness was demonstrated in our experimental conditions.",
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CVD synthesis of Al2O3 nanotubular structures using a powder source. / Park, Si Jung; Choi, Doo Jin.

In: Ceramics International, Vol. 40, No. 6, 01.01.2014, p. 7923-7929.

Research output: Contribution to journalArticle

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AU - Choi, Doo Jin

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