Method of producing hybrid tubular metal/ceramic composites
AssigneeThor Technologies, Inc.
InventorsStuart T. Schwab, Kevin W. Dudek
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Abstract
There are disclosed inventions relating to tubular hybrid metal/ceramic composites and the methods of making them wherein the ceramic chosen has a lower thermal expansion than that of the metal.
Claims18
A method of making a tubular ceramic/metal composite comprising
- associating at least one tubular metallic element with a polymeric ceramic precursor having a thermal expansion lower than (said metallic element with! said at least one tubular metallic element to form a preceramic composites and
- subjecting said composite to pyrolysis by high frequency microwave radiation, until the polymeric ceramic precursor is converted into a ceramic having said at least one tubular metallic element integrally formed as part of said composite.
A method of making a tubular ceramic/tubular metal element composite comprising placing a fiber-reinforced fluid polymeric ceramic precursor having a lower thermal expansion than the tubular metallic element and loaded with a susceptor in a mold,
- associating therewith at least one tubular metallic element made of any metal and/or metal alloy that can conduct electricity to form a preceramic composite, and subjecting said composite to pyrolysis by microwave radiation of at least about 20 GHz for a time sufficient to convert said polymeric ceramic precursor to a ceramic having said at least one tubular metallic element integrally formed as part of said ceramic composite.
A method of making a tubular ceramic/tubular metal element composite comprising forming a fiber reinforcement infiltrated with a polymeric ceramic precursor having a lower thermal expansion than that of the tubular metallic element, associating at least one tubular metallic element therewith to form a preceramic composite,
- and
- subjecting said composite to pyrolysis by high frequency microwave radiation, until the polymeric ceramic precursor in said composite is converted into a ceramic having said at least one tubular metallic element integrally formed therewith.
Dependencies are inferred from the claim text.