CERAMIC FOAM

Ceramic foams are very tough foams made from ceramics or processed from ceramics with foam-like structures. Ceramic foams have high porosity and high permeability. The basic use of ceramic foam is its use in filtering molten metal or hot gas. They are also used in thermal protection systems and heat exchangers.

Generally, materials such as alumina, cordierite, mullite and zirconia are being used for foams, however, many other ceramics can be foamed, including non-oxides such as silicon carbide and aluminium nitride. The pore walls and struts are solid and fully dense, providing high strength and chemical resistance.