Microstructural and corrosion study of aluminum foams obtained by space holder process using low-cost removable preforms

The space holder process (SHP) is a useful and common technique to obtain metal foams. However, an important question remains unsolved: Would the quality of salt affect properties aluminum foam obtained? In this paper, removable preforms two types (refined unrefined) were infiltrated with A356 alloy foams different pore sizes. interaction preform-metal was studied from analyzing morphological structure foams, microstructure, corrosion resistance Al356 alloy. It observed that, although exhibited some differences, they did not show variations in relation porous microstructure obtained. Additionally, electrochemical analyses significant effects on behavior caused by preforms.