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US 12,006,267 B2Granted
Ceramic composites and methods of making and using the same
AssigneeNorth Carolina State University
InventorChengying Xu
Life of this patent
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Abstract
The present disclosure provides for ceramic composite materials and methods of making ceramic composite materials. In an aspect, the ceramic composite materials can be made of polymer derived ceramics (PDCs) as the matrix, while substrates can be used as the microwave absorbing phases.
Claims20
A ceramic composite material comprising:
- a matrix comprising a polymer-derived ceramic;
- one or more of substrates selected from:
- an ultra-high temperature ceramic (UHTC), an electrically-conductive material, magnetic-conductive material, and a combination of these.
A method of forming a ceramic composite comprising:
- a) providing a mixture comprising:
- 1) A liquid preceramic precursor, and
- 2) One or more substrates, wherein the one or more substrates is selected from a solid substrate, a liquid substrate, or both the solid substrate and the liquid substrate, wherein the solid substrates and liquid substrates are independently selected from the group consisting of:
- an ultra-high temperature ceramic (UHTC), carbon, an electrically-conductive material, magnetic-conductive material, and a combination of these,
- b) heating the mixture at a temperature for a time effective to cure the liquid preceramic precursor to form a solid mixture;
- c) subjecting the solid mixture to one or more forces to form particles of the solid mixture;
- d) pressing the particles of the solid mixture into a mold having a pre-selected shape to form compacts of the solid mixture;
- and
- e) pyrolyzing the solid mixture in step (b) or the compacts in step (d) or both at a temperature for a time effective to form the ceramic composite material.
6 more elements
Dependencies are inferred from the claim text.