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

1986-09-16

1990-02-13

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 87, 501 88, 501 96, 501 98, 501127, 501128, 501134, 501153, 423625, 264 65, 264 57, C04B 3502

Patent

active

049006991

ABSTRACT:
A method for producing a self-supporting ceramic composite structure, which includes 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 with an oxidant and, optionally, one or more metallic constituents, and the filler embedded by the matrix. The method includes heating a first source of molten parent metal and a reservoir source of molten parent metal and contacting the first source of molten parent metal with a permeable bedding of filler. The first source of molten parent metal is reacted with the oxidant to form the oxidation reaction product and is replenished from 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 first source of molten parent metal to grow the oxidation reaction product through the shaped, hollow body of filler.

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"Oxidation of Molten Aluminum Alloys. Reaction with Refractories"-M. Drouzy and M. Richard--Mar., 1974-Fonderie, France, No. 332, pp. 121-128.
"Refractories for Aluminum Alloy Melting Furnaces"-B. Clavaud and V. Jost--Sep., 1980-Lillian Brassinga (from French) Jan., 1985.

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