Table 1: Results of salt / argon injection reclamation of aluminum matrix composites 
Composite Salt added 
Same TPES a Metal Dross, qm NMME: 
charge, [8]... recovered, [g] 1%] | 1%] 
Matrix | SiC, g %) lg 
AISi9Mg/5vol.%SiC@ 323 10 300 60 93.0 88.0 
AISiOMg/svol%siCq (294 | 6 | 60 | 20 | 290 986 | 966 
AlSi9Mg/1.6vol.%SiC . 295 5 60 291 | 59 97.0 
Metallographic examination of the recovered metal after separation was realized through optica 
microscopy (NEOPHOT) and through electronic microscopy (X-ray microanalyser JXA-5A JEOL) 
The microstructure of the gravitationally casted A1Si9Mg/SiC scrap composite is presented in Fig. 1. 
Fig.1: The microstructure of AlSi9Mg/1.6vol%SiCy, scrap; x250; eutectic silicon particles in the scrap are 
coarse. 
ty, 4 
Characteristic for the microstructure of the recovered metal was the fact that, after 5 minutes of stirring 
of the scrap with the ternary flux, the separation of the silicon carbide particles was not complete. 
The microscopic study put also in evidence the formation of the FeAl; compound. the modified eutectic’ 
and the grain refined microstructure. 
Figure 2 put in evidence the formation of an unknown phase, which contain titanium, this being 
explained by the presence of titanium excess. Electronic microscopy realized by X-ray maps of Si, Ti 
and Al, and by the microanalysis of Ti, Si and Al shown that the titanium compound is TiSi, with 
orthorhombic structure: a =0.8252 nm, b = 0.4783 nm, c = 0.854 nm. The backscatterd image of this 
titanium compound, X-ray maps of Si, Ti and Al, and the microanalysis of Ti, Si and Al are presented 
in Figure 3, ato g. 
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