Ceramic foam
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Description
Ceramic foams are usually manufactured by impregnating open-cell polymer foams internally with ceramic slurry and then firing in a kiln, leaving behind only ceramic material. Ceramic foams have also been used as stiff lightweight structural material, specifically for support of reflecting telescope mirrors. They are typically open-cell foams. The defining characteristic of these foams is a very high porosity, with typically 75-95% of the volume consisting of void spaces. The strength of foamed material possesses a power law relationship to its density: for example, a 20% dense material is more than twice as strong as a 10% dense material.
Synonyms and Related Terms
Foamed ceramic;
Applications
- thermal insulation, acoustic insulation
- adsorption of environmental pollutants,
- filtration of molten metal alloys
Working Properties
Resources and Citations
- American Elements: Foams