Behavior of the impurity-rich phase in metallurgical grade silicon during fractional melting

Jaewoo Lee, Changbum Lee, Wooyoung Yoon

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A new fractional melting (FM) process that uses centrifugal force to separate the liquid from the cake (liquid+solid) was developed for refining metallurgical grade Si. The behavior of the solute and the refining mechanism during the FM process were studied using scanning electron microscopy (SEM) and electron probe microanalysis (EPMA). During the FM, the solutes migrated very quickly and aggregated at seemingly disordered locations, where they subsequently melted before the silicon bulk matrix melted.

Original languageEnglish
Pages (from-to)3473-3477
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number4
DOIs
Publication statusPublished - 2012

Keywords

  • Fractional melting
  • Impurity
  • MG silicon
  • Mushy zone
  • Refining

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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