Slurry for making ceramic insulation

Details Slurry for making ceramic insulation Slurry for making ceramic insulation

1995-06-05

1998-12-15

Group, Karl

Compositions: ceramic

Ceramic compositions

Pore-forming

501 84, 501 95, C04B 3800, C04B 3580

Patent

active

058496505

ABSTRACT:
A fibrous ceramic mat is molded from a slurry of ceramic fibers and/or ceramic microparticles and/or a metal. The mat is impregnated with a sol prior to drying. A catalyst for the sol is introduced into the mat to cause the sol to gel. The sol-gel binder forms bonds so that the mat is dimensionally stabilized. The mat is dried to produce the desired ceramic insulation that has preferably a consistent microstructure and a fully gelled sol-gel binder through its entire thickness. When a metal is used, it corrodes (i.e., oxidizes) or otherwise reacts to form a refractory binder that augments the sol and reduces the need to infuse sol incrementally to achieve strength. Using metal powder significantly reduces the cost of manufacture.

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