Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1988-11-01
1990-04-10
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
501 95, 501 96, 501127, 501128, 501102, 264 65, C04B 3500
Patent
active
049161130
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.
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Lesher H. Daniel
Newkirk Marc S.
Urquhart Andrew W.
Zwicker Harry R.
Bell Mark L.
Group Karl
Lanxide Technology Company, LP
McShane William E.
Mortenson Mark G.
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