Ceramic microtubular materials and method of making same

Details Ceramic microtubular materials and method of making same Ceramic microtubular materials and method of making same

1990-04-12

1992-03-10

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

264 292, 264 296, 264 81, 264135, 264137, 264221, 264255, 264257, 428288, 4283115, 428337, 428338, 428398, 428698, 501 1, 501 81, 501 95, 502439, 502527, B01J 3200, B32B 518, B32B 1800, C04B 3806, D01F 900

Patent

active

050949063

ABSTRACT:
Novel ceramic filamentary micro-tubular materials are described. An entirely, fluid-phase method has been devised for producing such interwoven ceramic filamentary tubular materials. The process depends for its success the ability to generate a three-dimensional random weave of ceramic tubes, with diameters in the range of about 0.01 to 2.0 microns, by forming carbon filaments by catalytic decomposition of a hydrocarbon feed, coating the filaments with a ceramic coating and then oxidizing the coated filaments to remove the carbon core leaving behind hollow ceramic micro-tubular filaments. The ceramic micro-tubular materials may be free-standing porous structures and may have a variety of uses as thermal insulators, catalyst supports, superconductor supports, filters or as reinforcements for composites.

REFERENCES:
patent: 4900483 (1990-02-01), Witzke et al.
patent: 4943472 (1990-07-01), Dyksterhoasl et al.
patent: 4982068 (1991-01-01), Pollocks et al.

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