Patent ID: 6932925

Claim:
A method of producing a super-lightweight ceramic foam, comprising the steps of: adding ceramic short fibers into a nonaqueous solvent containing a metal alkoxide dissolved therein; dispersing said ceramic short fibers in said nonaqucous solvent; adding one of an aqueous slurry containing ceramic powder, and an aqueous solution containing a component serving as a raw material of ceramic powder dissolved therein, into said nonaqueous solvent; stirring the mixture; allowing said mixture to separate into an aqueous phase and an nonaqueous phase; removing said nonaqueous phase to obtain an aqueous slurry containing said ceramic short fibers dispersed therein; adding a foaming agent into said slurry; foaming said slurry under mechanical stirring; filling and drying said foamed slurry in a mold to form a molded body; and firing said molded body.