Abstract
Numerical simulations of phase decomposition in thin films on patterned substrates are presented for a binary alloy in order to study the influence of substrate composition on microstructural evolution. For systems with a substrate composition less than the film composition, a preferential segregation of A to the interface was observed and no phase decomposition occurred within the film. For patterned systems with a substrate composition exceeding the film composition, the B-rich phase was able to grow by a barrierless transformation for a range of film compositions outside the chemical spinodal. The number of precipitates which formed on the mesa, the dihedral angles at the three-phase trijunctions, and the resulting microstructure within the film were shown to be sensitive to the substrate composition.
Original language | English |
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Pages (from-to) | 1-8 |
Number of pages | 8 |
Journal | Metals and Materials International |
Volume | 9 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2003 Feb |
Keywords
- Patterned substrate
- Phase decomposition
- Segregation
- Thin film
- Wetting
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry