Composite ceramic articles and methods of making same

Details Composite ceramic articles and methods of making same Composite ceramic articles and methods of making same

C - Chemistry, Metallurgy

04

B

261/1, 25/123

C04B 35/65 (2006.01) C04B 35/76 (2006.01) C04B 35/80 (2006.01) C04B 41/50 (2006.01) C04B 41/87 (2006.01)

Patent

CA 1271783

ABSTRACT OF THE DISCLOSURE A method of making self-supporting ceramic composite structures having filler embedded therein includes infil- trating a permeable mass of filler with polycrystalline ma- terial 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 oxi- dant. Within a certain temperature region and optionally aided by one or more dopants in or on the parent metal, mol- ten parent metal will migrate through previously formed oxi- dation reaction product into contact with the oxidant, caus- ing the oxidation reaction product to grow so as to embed the adjacent filler and provide the composite structure.

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