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Effects of Na2B4O7on the elimination of iron from aluminum melt

Authors
Journal
Scripta Materialia
1359-6462
Publisher
Elsevier
Publication Date
Volume
57
Issue
3
Identifiers
DOI: 10.1016/j.scriptamat.2007.04.009
Keywords
  • Aluminum
  • Iron
  • Thermodynamics
  • Purification
Disciplines
  • Chemistry

Abstract

A new approach for iron removal from commercial aluminum by the addition of Na 2B 4O 7 was studied. The iron composition decreased from 0.33 to 0.18 wt.% after purification. X-ray diffraction analysis of the sludge indicated that the chemical reaction between B and Fe in the aluminum melt to form Fe 2B is the main reason for the reduction in Fe. Thermodynamic calculations also prove the formation of an iron boride phase in the melt.

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