Effects of aging on nanocrystalline anatase-to-rutile phase transformation kinetics

Hsing-I Hsiang, Shih Chung Lin

研究成果: Article

48 引文 (Scopus)

摘要

The effects of aging on the kinetics for nanocrystalline anatase-to-rutile phase transformation were investigated. The agglomeration and crystallite sizes for TiO2 gels decreased with increasing aging treatment. For unaged samples, the agglomeration number was high, so that there are a larger number of anatase crystallites and crystallite-crystallite anatase contacts in each cluster. This promotes interfacial nucleation. Therefore, the activation energy of nucleation calculated for unaged samples was smaller than that for those found for the aged ones.

原文English
頁(從 - 到)557-561
頁數5
期刊Ceramics International
34
發行號3
DOIs
出版狀態Published - 2008 四月 1

指紋

Titanium dioxide
Aging of materials
Phase transitions
Kinetics
Nucleation
Agglomeration
Crystallite size
Crystallites
Gels
Activation energy
titanium dioxide

All Science Journal Classification (ASJC) codes

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

引用此文

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Effects of aging on nanocrystalline anatase-to-rutile phase transformation kinetics. / Hsiang, Hsing-I; Lin, Shih Chung.

於: Ceramics International, 卷 34, 編號 3, 01.04.2008, p. 557-561.

研究成果: Article

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AB - The effects of aging on the kinetics for nanocrystalline anatase-to-rutile phase transformation were investigated. The agglomeration and crystallite sizes for TiO2 gels decreased with increasing aging treatment. For unaged samples, the agglomeration number was high, so that there are a larger number of anatase crystallites and crystallite-crystallite anatase contacts in each cluster. This promotes interfacial nucleation. Therefore, the activation energy of nucleation calculated for unaged samples was smaller than that for those found for the aged ones.

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