**4. Conclusions**

The highest corrosion resistance or susceptibility to corrosion is a complex function of the alloys and composite composition, structure and the exposed surface, all of which determine the protective characteristics of the film that formed on the alloys.

Alloys with a higher aluminum content have a higher corrosion resistance, mainly due to the formation of a protective film.

Even at a higher Al concentration, the corrosion resistance depends on the structure of the alloys.

The results also indicate that the corrosion resistance of Zn-Al-SiC and Zn-Al-Al2O3 MMCs composites has demonstrated the improvement in comparison to ZA alloys in 3wt% NaCl solutions.
