Carbon-Carbon
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Definition:
The combination of carbon or graphite fibers in a carbon or graphite matrix produces a material with unusual properties called a carbon-carbon composite. They are fabricated by multiple impregnation of porous "all carbon" frames or configurations which are then impregnated with a liquid carbonizable precursor (e.g., pitch) and pyrolyzed. Carbon-carbon composites can also be produced by chemical vapor deposition of pyrolytic carbon. The main advantages of carbon-carbon composites are their retention of useful properties up to 2760 °C (5000 °F). A foamed carbon-carbon composite has also been fabricated.
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