Carbon ceramic composites and methods
AssigneeDynamic Material Systems, LLC
InventorsArnold Hill, William Easter
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Abstract
A composite article is comprised of coal dust, as defined herein, and a polymer derived ceramic material that is pyrolyzed in a substantially non-oxidizing atmosphere. For example, the composite article may be made of a mixture of the coal dust and polymer derived ceramic, from particles formed of a mixture of coal dust and polymer derived ceramic or from complex particle composites comprising a plurality of particles formed of a mixture of coal dust and polymer derived ceramic.
Claims20
A ceramic composite article comprises:
- coal dust;
- a polymer derived ceramic, wherein the coal dust is mixed with the polymer derived ceramic;
- the ceramic composite article is subjected to pressure to form a green composite article;
- and
- the green composite article is pyrolyzed in a non-oxidizing atmosphere, such that at least some of the components of the coal dust are chemically reactive forming chemical bonds with the polymer derived ceramic material during the process of pyrolyzation, and the density of the green composite article increases during pyrolyzation.
A method of forming a ceramic composite article comprising:
- mixing coal dust and a polymer derived ceramic to form a mixture;
- subjecting the mixture to a pressure in a press to form a green composite article;
- and
- pyrolyzing the green composite article in a non-oxidizing atmosphere, wherein at least some of the components of the coal dust are chemically reactive forming chemical bonds with the polymer derived ceramic material during the process of pyrolyzation, and the density of the green composite article increases during pyrolyzation.
The method of claim IS, wherein the complex particles are mixed with a binder prior to consolidating the complex particles into the shape of the article.
Dependencies are inferred from the claim text.