Multilayer ultra-high-temperature ceramic coatings

DWPI Title: Coated carbon-carbon composite material used for providing oxidation protection from ultra-high-temperature, has inhibited carbon-carbon material that is coated with continuous layers on one above other
Abstract: A coated carbon-carbon composite material with multiple ceramic layers to provide oxidation protection from ultra-high-temperatures, where if the carbon-carbon composite material is uninhibited with B4C particles, then the first layer on the composite material is selected from ZrB2 and HfB2, onto which is coated a layer of SiC coated and if the carbon-carbon composite material is inhibited with B4C particles, then protection can be achieved with a layer of SiC and a layer of either ZrB2 and HfB2 in any order.
Use: Coated carbon-carbon composite material used for providing oxidation protection from ultra-high-temperature.
Advantage: The carbon-carbon composite material can strongly influence the microstructure and surface characteristics of carbon fibers, and the high temperature heat treatment can decrease the open porosity due to amorphous carbon deposition at the surface of material. The size and orientation of crystallites of fiber and matrix can be improved, and pre-treatment of composite material can enhance the absorbance of ceramic coatings by controlling the physical and chemical properties that affect coating infiltration and adhesion.
Novelty: The composite material has inhibited carbon-carbon material that is provided with boron carbide particles. A first continuous layer is made of material chosen from zirconium diboride and hafnium diboride that is coated onto portion of surface of inhibited carbon-carbon material, and second continuous layer has silicon carbide that is coated onto first continuous layer.
Filed: 2/5/2009
Application Number: US2009366028A
Tech ID: SD 10856.0
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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