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.
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Muñiz, R., Flores, A., Ortiz, J. et al. Characterization by EBSD of antimony-calcium rich phases formed during purification of aluminum scrap. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 28, 647–649 (2013). https://doi.org/10.1007/s11595-013-0745-y
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DOI: https://doi.org/10.1007/s11595-013-0745-y