Effect of phase fraction on the tri-junction in two-phase nanoparticle systems

J. M. Howe, A. M. Mebed, K. Chatterjee, P. Li, M. Murayama, W. C. Johnson

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


The equilibrium dihedral angles at the solid-solid-vapor tri-junctions of two-phase Cu-Ag alloy nanoparticles 40-100 nm in diameter were measured as a function of phase fraction using transmission electron microscopy. The {111} solid-solid interface was cusp-oriented while the surface orientations of the Cu-rich and Ag-rich phases at the tri-junction were mostly free to vary. The dihedral angles at the tri-junction were found to vary with the phase fraction, due to the coupling between the relative amounts of each phase and the equilibrium conditions at the tri-junction. This equilibrium condition was used to measure the ratio of the Ag-rich and Cu-rich surface energies to the {111} interfacial energy, which were found as 2.1 and 3.5, respectively.

Original languageEnglish
Pages (from-to)1359-1372
Number of pages14
JournalActa Materialia
Issue number5
Publication statusPublished - Mar 14 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys


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