Compositions: ceramic – Ceramic compositions – Refractory
Patent
1993-01-21
1995-05-30
Group, Karl
Compositions: ceramic
Ceramic compositions
Refractory
501 89, 501 92, C04B 3565, C04B 3558
Patent
active
054200857
ABSTRACT:
A method of making self-supporting ceramic composite structures having filler embedded therein includes infiltrating a permeable mass of filler with polycrystalline material comprising an oxidation reaction product obtained by oxidation of a parent metal such as aluminum and optionally, containing therein non-oxidized constituents of the parent metal. The structure is formed by placing a parent metal adjacent to a permeable filler and heating the assembly to melt the parent metal and provide a molten body of parent metal which is contacted with a suitable vapor-phase oxidant. Within a certain temperature region and optionally, aided by one or more dopants in or on the parent metal, molten parent metal will migrate through previously formed oxidation reaction product into contact with the oxidant, causing the oxidation reaction product to grow so as to embed the adjacent filler and provide the composite structure. In a preferred embodiment, a parent metal comprising aluminum is oxidized by a vapor-phase oxidant comprising nitrogen to form a ceramic matrix comprising an aluminum nitride oxidation reaction product. In a particularly preferred embodiment, one or more protective coatings are applied to the filler prior to formation of the aluminum nitride oxidation reaction product matrix.
REFERENCES:
patent: 1362237 (1920-12-01), Ros
patent: 2741822 (1956-04-01), Udy
patent: 3108887 (1963-10-01), Lenie
patent: 3255027 (1966-06-01), Talsma
patent: 3262763 (1966-07-01), Bechtold
patent: 3296002 (1967-01-01), Hare
patent: 3298842 (1967-01-01), Seufert
patent: 3408312 (1968-10-01), Richards et al.
patent: 3419404 (1968-12-01), Mao
patent: 3421863 (1969-01-01), Bawa et al.
patent: 3437468 (1969-04-01), Seufert
patent: 3473938 (1969-10-01), Oberlin
patent: 3473987 (1969-10-01), Sowards
patent: 3514271 (1970-05-01), Yates
patent: 3551101 (1970-12-01), Matsuo
patent: 3649310 (1972-04-01), Yates
patent: 3669695 (1972-06-01), Iler
patent: 3789096 (1974-01-01), Church
patent: 3864154 (1975-02-01), Gazza et al.
patent: 3973977 (1976-08-01), Wilson
patent: 4354991 (1982-10-01), Suzuki
patent: 4478785 (1984-10-01), Huseby
patent: 4591537 (1986-05-01), Aldinger
patent: 4600481 (1986-07-01), Sare et al.
patent: 4713360 (1987-12-01), Newkirk et al.
patent: 4851375 (1989-07-01), Newkirk et al.
patent: 4853352 (1989-08-01), Newkirk et al.
patent: 4882306 (1989-11-01), Kennedy et al.
patent: 4916113 (1990-04-01), Newkirk et al.
patent: 5017526 (1991-05-01), Newkirk et al.
patent: 5017533 (1991-05-01), Newkirk et al.
patent: 5019541 (1991-05-01), Kantner et al.
patent: 5051382 (1991-09-01), Newkirk et al.
patent: 5106789 (1992-04-01), Lesher et al.
patent: 5202059 (1993-04-01), Kennedy
"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.
Aghajanian Michael K.
Biel, Jr. John P.
Claar Terry D.
Lesher Harold D.
Newkirk Marc S.
Group Karl
Lanxide Technology Company, LP
Mortenson Mark G.
Ramberg Jeffrey R.
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