Effect of Interfacial Segregation on Phase Decomposition of a Thin Film on a Patterned Substrate

William C. Johnson, S. M. Wise, Joo Youl Huh, J. Favergeon

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)1-8
Number of pages8
JournalMetals and Materials International
Volume9
Issue number1
Publication statusPublished - 2003 Feb 1

Keywords

  • Patterned substrate
  • Phase decomposition
  • Segregation
  • Thin film
  • Wetting

ASJC Scopus subject areas

  • Engineering(all)

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