| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1464836 | Ceramics International | 2008 | 5 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Hsing-I Hsiang, Shih-Chung Lin,