Noncollapsible ceramic foam

Details Noncollapsible ceramic foam Noncollapsible ceramic foam

1981-04-16

1982-10-26

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Pore-forming

106 88, 106106, 264 43, 501 89, 501107, 501127, 501128, 501133, 501142, C04B 2100

Patent

active

043562710

ABSTRACT:
A lightweight, porous, ceramic material is made by mixing a slurry containing a foaming agent until a constant volume of foam is achieved. The foam is then pumped or poured into a mold or form where it sets up into a cellular structure. The formed foam is then cured, dried and heated at elevated temperatures. The slurry used in making the foam is made from ceramic particles, water, foaming agent and bonding materials. The bonding materials function to provide an initial bond as the foam is generated to prevent foam collapse, a low temperature bond after the foam structure is set, cured and dried, and a final bond after heating to elevated temperatures. In a preferred embodiment, the ceramic particles used are alumina.

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