Ceramic filter element
AssigneeCoors Tek, Inc.
InventorsMarcus A. Ritland, Dennis W. Readey, Richard N. Kleiner, Jack D. Sibold, Kyle Knudson, Steven Landin, Paul Thoen
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Abstract
A process for sealing a ceramic filter by infiltrating a metal into an end of the filter is disclosed. The process includes the steps of contacting the end of a porous ceramic filter with a molten metal, whereby the metal enters into the ceramic matrix to substantially fill the void space. The ceramic filter is cooled to form a filter having a ceramic-metal composite portion. The present invention also provides a filter having an infiltrated metal seal. Methods for joining infiltrated ends are also provided.
Claims11
A ceramic filter element for a filtration device, comprising:
- (a) a substantially cylindrical sintered ceramic porous support having channels therethrough;
- and
- (b) a metal comprising from about 1.5 weight percent to about 10 weight percent oxygen infiltrated into an end portion of said ceramic filter element by capillary action to form a ceramic-metal composite portion wherein said ceramic metal composite portion creates a substantially hermetic internal seal within said porous support and wherein said channels are not substantially filled with said metal.
Dependencies are inferred from the claim text.