Reservoir feed method of making ceramic composite structures and

Details Reservoir feed method of making ceramic composite structures and Reservoir feed method of making ceramic composite structures and

1988-03-15

1990-04-17

Hearn, Brian E.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 88, 501 92, 501 94, 501 96, 501 98, 501119, 501120, 501127, 501128, 501134, 501153, 501154, 264 65, 264500, C04B 3510

Patent

active

049180347

ABSTRACT:
A method for producing a self-supporting ceramic composite structure comprising a ceramic matrix embedding a filler, includes oxidizing a parent metal to form a polycrystalline material comprising the oxidation reaction product of the parent metal and, optionally, one or more metallic constituents. The method includes heating the parent metal to provide a source of molten parent metal and a reservoir of molten metal which is in communication with the parent metal having a chemical composition which is different from the parent metal and contacting the molten parent metal with a permeable bedding of filler. The molten parent metal reacts with the oxidant to form the oxidation reaction product and is replenished by the reservoir as the reacting continues for a time sufficient to grow the oxidation reaction product to a desired extent and thereby embed at least a portion of the bedding of filler within the oxidation reaction product to form the ceramic composite structure. The bedding of filler may have any suitable shape, including that of a hollow body, the interior of which is contacted by the molten parent metal to grow the oxidation reaction product through the shaped, hollow body of filler.

REFERENCES:
patent: 3709096 (1974-01-01), Church et al.
patent: 4824008 (1989-04-01), Luszoz et al.
patent: 4833110 (1989-05-01), Newkirk et al.

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