Removal of Low-Content Impurities from Al By Super-Gravity

• Published in: Metallurgical and materials transactions. B, Process metallurgy and materials processing science Vol. 41; no. 3; pp. 505 - 508
• Main Authors: Zhao, Lixin, Guo, Zhancheng, Wang, Zhi, Wang, Mingyong
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.06.2010; Springer; Springer Nature B.V
• Subjects: Aluminum; Applied sciences; Characterization and Evaluation of Materials; Chemistry and Materials Science; Communication; Exact sciences and technology; Gravity; Impurities; Iron; Materials processing; Materials Science; Metallic Materials; Metallurgy; Metals. Metallurgy; Microstructure; Nanotechnology; Process metallurgy; Production of metals; Silicon; Solidification; Structural Materials; Surfaces and Interfaces; Thin Films; Bulk Metallic Glass; Recycle Metal; Zone Refining; Normal Gravity; Unidirectional Solidification; Removal; Impurity
• ISSN: 1073-5615; 1543-1916
• DOI: 10.1007/s11663-010-9376-2

Super-gravity segregation was investigated to enrich and remove the low-content impurities from Al by solidifying Al under a super-gravity field. The macrosegregations of Fe (0.19 wt pct) and Si (0.09 wt pct) were remarkable within 1.5 cm along the direction of super gravity, and the concentration ratios between two sides under super gravity of 1000  g reached 4.05 and 2.80, respectively. The microstructures demonstrated that Fe- and Si-rich phases formed and gathered at the bottom along the direction of super-gravity field.