Characterization by EBSD of antimony-calcium rich phases formed during purification of aluminum scrap

Rodrigo Muñiz; Alfredo Flores; Juan Ortiz; Nelly Rodríguez; Fernando Martínez; Jesús Luna; Pilar Orozco

doi:10.1007/s11595-013-0745-y

Journal of Wuhan University of Technology Materials Science Edition ›› 2013, Vol. 28 ›› Issue (4) : 647 -649. DOI: 10.1007/s11595-013-0745-y

Advanced Materials

Characterization by EBSD of antimony-calcium rich phases formed during purification of aluminum scrap

Rodrigo Muñiz ¹⁷⁴⁵^,^{^a}
, Alfredo Flores ²⁷⁴⁵
, Juan Ortiz ¹⁷⁴⁵
, Nelly Rodríguez ³⁷⁴⁵
, Fernando Martínez ¹⁷⁴⁵
, Jesús Luna ¹⁷⁴⁵
, Pilar Orozco ⁴⁷⁴⁵

Author information +

History +

PDF

Abstract

We studied the influence of antimony on the modification rate of the silicon eutectic with sodium and/or strontium for casting of Al-Si alloys, and introduced controlled Ca and Sb to the system and studied the resulting compounds, which were determined to be Ca₂Sb and AlSb. 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 Al occurs mainly through the reaction (Sb)Al + 2Ca = Ca₂Sb + Al.

Keywords

aluminum alloys / antimony contamination / modification

Cite this article

Download citation ▾

Rodrigo Muñiz, Alfredo Flores, Juan Ortiz, Nelly Rodríguez, Fernando Martínez, Jesús Luna, Pilar Orozco. Characterization by EBSD of antimony-calcium rich phases formed during purification of aluminum scrap. Journal of Wuhan University of Technology Materials Science Edition, 2013, 28(4): 647-649 DOI:10.1007/s11595-013-0745-y

登录浏览全文

4963

注册一个新账户忘记密码

References

Publishing order | Descend order by publishing year | Descend order by cited within

[1]	James RM, Dinman BD Toxicity Considerations of Antimony Metals and Its Oxides[M], 1987 USA AFS St. Louis Missouri 883-885.

[2]	Davis JR, International ASM ASM Specialty Handbook. Aluminum and Aluminum Alloys[J]. The Materials Information Society, 2002, 40–46: 88

[3]	Wang W, Gruzleski JE Interactive Effects during Sodium or Strontium Treatment of Antimony-containing A356 Alloy[J]. Transactions of the American Foundrymen’s Society, 1990, 98: 227-234.

[4]	Gruzleski JE The Art and Science of Modification: 25 Years of Progress[J]. Transactions of the American Foundrymen’s Society, 1992, 100: 673683

[5]	Wang W, Gruzleski JE Modifier-Antimony’-Interactions-The Problem, Mechanisms and Solution[C]. Proceedings of 3rd International Conference on Molten Aluminum Processing. Sheraton World Resort. Orlando Florida. Sponsored by Transactions of the American Foundrymen’s Society, 1992 93-124.

[6]	Hardy C Calcium to Purify Scrap Aluminum[J]. Metals Progress, 1941, 70: 71-7.

[7]	Prasada Rao AK, Das K, Murty BS, . Microstructural Features of As-Cast A356 Alloy Inoculated With Sr, Sb Modifiers and Al-Ti-C Grain Refiner Simultaneously[J]. Mat. Let., 2008 273-275.

[8]	Dahle AK, Nogita K, McDonald SD, . Eutectic Modification and Microstructure Development in Al-Si Alloys[J]. Mater. Sci. Eng. A, 2005 243-248.

[9]	Apelian D, Sigworth GK, Whaler KR Assessment of Grain Refining and Modification of Al-Si Foundry Alloys by Thermal Analysis[J]. AFS Transaction, 1984, 297: 307-392.