Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1987-12-02
1989-07-11
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156245, 55523, 106 75, 106 84, 2105101, 264 58, 264 59, 264 60, 264 63, B32B 1800
Patent
active
048469068
ABSTRACT:
Described herein are porous ceramic articles comprised of a porous ceramic body portion (of either predominantly open- or predominantly closed-cell porosity) having, integral with pre-selected surfaces thereof, a thin porous ceramic membrane layer which itself may be of open- or closed-celled porosity. Also described are methods of bringing about such membrane layers and such articles. The invention is particularly useful for providing porous ceramic filtering elements, such as diesel particulate traps, wherein the body portion has a predominant open-celled porosity and wherein the porous ceramic membrane surfaces also are open-celled porosity but whose pores are smaller than those of the body portion, as well as for providing articles such as kiln furniture having smooth porous ceramic membrane layers or skins on pre-selected surfaces.
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Helferich Richard L.
Schenck Robert C.
The Duriron Company, Inc.
Weston Caleb
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