Characterization by EBSD of Antimony-calcium Rich Phases Formed during Purification of Aluminum Scrap

We studied the influence of antimony on the modification rate of the silicon eutectic with sodium and/or strontium for castiig of A1-Si alloys, and introduced controlled Ca and Sb to the system and studied the resulting compounds, which were determined to be CazSb and A1Sb. Scanning electron microsc...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2013-08, Vol.28 (4), p.647-649
Main Authors: Muñiz, Rodrigo, Flores, Alfredo, Ortiz, Juan, Rodríguez, Nelly, Martínez, Fernando, Luna, Jesús, Orozco, Pilar
Format: Article
Language:English
Subjects:
Advanced Materials
Aluminum
Aluminum base alloys
Antimony
Antimony base alloys
Chemistry and Materials Science
EBSD
Electron back scatter diffraction
Intermetallic compounds
Materials Science
Phases
Scrap
Sodium
净化过程
废铝
扫描电子显微镜
电子背散射衍射
表征
钙
锑
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Summary:We studied the influence of antimony on the modification rate of the silicon eutectic with sodium and/or strontium for castiig of A1-Si alloys, and introduced controlled Ca and Sb to the system and studied the resulting compounds, which were determined to be CazSb and A1Sb. Scanning electron microscopy together with the complementary technique of electron backscatter diffraction （EBSD） were used to characterize the materials. The experimental results provided the basis for us to establish that antimony removal from AI occurs mainly through the reaction （Sb）A1 ＋ 2Ca = Ca~Sb ＋ A1.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-013-0745-y