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Properties of Aluminium Foams Reinforced with Ceramic Particles

Aluminium foams are materials with a specific combination of properties due to their cellular structure. Unlike monolithic aluminium, foams have a significantly lower mass as a result of porosity. The higher it is, the lower the density and mass, but also the lower the mechanical properties. To improve the mechanical properties of aluminium foams, various ceramic particles can be used as reinforcements, whose content, size and distribution represent a significant factor. If the foam contains an excessive amount of reinforcement particles, it may become brittle. Also, nano-particle ceramic reinforcements tend to agglomerate, causing brittleness in cell wall areas. This article gives an overview of the properties of aluminium foams reinforced with particles of alumina (Al2O3), silicon carbide (SiC), titanium boride (TiB2) and boron carbide (B4C) with special emphasis on their compressive behavior.

aluminium foam ; porosity ; ceramic particles ; compressive strength ; energy apsorption

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