Open-cell and closed-cell metal foams have been reinforced with different kinds of micro- and nano-sized reinforcements to enhance their mechanical properties of the metallic matrix. The idea behind this is that the reinforcement will strengthen the matrix of the cell edges and cell walls and provide high strength and stiffness. This manuscript provides an updated overview of the different manufacturing processes of composite and nanocomposite metal foams.
Keywords: carbon nanotubes; ceramic particles; composite metal foams; hollow spheres; metal foams; metal matrix composites (MMC) foams; micro and nano reinforcements.