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

1991-10-07

1993-02-23

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

264 296, 264 81, 264129, 264221, 264255, 505 1, D01D 500

Patent

active

051887762

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: 4518575 (1985-05-01), Porter et al.
patent: 4900483 (1990-02-01), Witzke
patent: 4970123 (1990-11-01), Witzke

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