Effect of solid-liquid interface morphology on grain boundary segregation during colloidal polycrystallization

Sumeng Hu, Jun Nozawa, Suxia Guo, Haruhiko Koizumi, Kozo Fujiwara, Satoshi Uda

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The effect of the solid-liquid interface morphology on grain boundary (GB) segregation during colloidal polycrystallization was investigated by in situ optical observations.The time evolution of the impurity distribution in the liquid in the vicinity of solid-liquid interface was directly observed during crystal growth. Impurities were distributed homogeneously along the direction perpendicular to the growth orientation during the initial stage of the growth and were then gathered in the groove that formed at the solid-liquid interface as crystallization proceeded. GBs were exposed to the liquid at the bottom of the groove, and a high impurity concentration at the GB (CGB) was obtained when the area of the groove was large. The area of the groove changes depending on the crystallographic orientation of neighboring grains across GBs, which results in a difference in the interfacial energies.

Original languageEnglish
Pages (from-to)2765-2770
Number of pages6
JournalCrystal Growth and Design
Volume16
Issue number5
DOIs
Publication statusPublished - 2016 May 4

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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