Modified ceramic structures and methods of making the same

Details Modified ceramic structures and methods of making the same Modified ceramic structures and methods of making the same

1990-07-02

1991-11-05

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501127, 501128, 501133, 501 87, 501 88, 501 96, C04B 3500

Patent

active

050631853

ABSTRACT:
A method of producing self-supporting ceramic or ceramic composite structures comprising (i) a polycrystalline oxidation reaction product formed upon oxidation of a body of molten parent metal with an oxidant, and (ii) interconnected porosity at least partially accessible from one or more surfaces of the ceramic or ceramic composite body. A second polycrystalline ceramic material is incorporated into the porosity of the ceramic or ceramic composite body to modify or contribute to its properties.

REFERENCES:
patent: 2741822 (1956-04-01), Udy
patent: 3255027 (1966-06-01), Talsma
patent: 3296002 (1967-01-01), Hare
patent: 3298842 (1967-01-01), Seufert
patent: 3419404 (1968-12-01), Mao
patent: 3421863 (1969-01-01), Bawa
patent: 3437468 (1969-04-01), Seufert
patent: 3473938 (1969-10-01), Oberlin
patent: 3473987 (1969-10-01), Sowards
patent: 3789096 (1974-01-01), Church
patent: 3864154 (1975-02-01), Gazza et al.
patent: 3973977 (1976-08-01), Wilson
"Oxidation of Molten Aluminum Alloys. Reaction with Refractories", M. Crouzy 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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