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US 5,334,562 AGranted
Composite ceramic articles
AssigneeLanxide Technology Company, LP
InventorsMarc S. Newkirk, Andrew W. Urquhart, Harry R. Zwicker, H. Daniel Lesher
Life of this patent
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AssigneeLanxide Technology Company, LP
InventorsMarc S. Newkirk, Andrew W. Urquhart, Harry R. Zwicker, H. Daniel Lesher
Estimating the term…
Self-supporting ceramic composite structures having filler embedded therein are taught as being produced by a method which 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.
A self-supporting ceramic composite body comprising at least one filler material embedded by a ceramic matrix, said at least one filler material consisting essentially of randomly oriented crystallites, said ceramic matrix comprising (1) at least 1 percent by volume of at least one metallic constituent;
A self-supporting ceramic composite body comprising at least one filler material embedded by a ceramic matrix, said at least one filler material consisting essentially of randomly oriented crystallites, said ceramic matrix comprising (1) at least 1 percent by volume of at lest one metallic constituent;
A self-supporting ceramic composite body comprising at least one filler material embedded by a ceramic matrix, said at least one filler material consisting essentially of randomly oriented crystallites, said ceramic matrix comprising (1) at least one percent by volume of at least one metallic constituent, (2) at least one structural feature selected from the group consisting of (a) voids and (b) channels comprising at least a portion of said at least one metallic constituent, and (3) a single-phase polycrystalline oxidation reaction product selected from the group consisting of the oxides of silicon, tin, titanium and zirconium;
Dependencies are inferred from the claim text.